HOST LISTS AND KEYS FOR EACH PLANT GENUS

(in alphabetical order)

 

 

 

 

Gam-Hal

 

Gamochaeta

Gamolepis

Garcinia

Gardenia

Garnotia

Garrya

Gastridium

Gaudinia

Gaultheria

Gaura

Gaya

Gaylussacia

Gazania

Geissorhiza

Geitonoplesium

Gelsemium

Genipa

Genista

Gentiana

Gentianella

Geoffroea

Geophila

Geraea

Geranium

Gerardia

Gerbera

Geropogon

Gesneria

Gesnouinia

Geum

Gigantochloa

Gilia

Gilibertia

Ginoria

Girardinia

Girgensohnia

Gladiolus

Glandora

Glandularia

Glaucium

Glaux

Glechoma

Gleditsia

Glehnia

Gleichenia

Glinus

Gliricidia

Glochidion

Glossanthus

Gloxinia

Glyceria

Glycine

Glycosmis

Glycyrrhiza

Gmelina

Gnaphalium

Gnidia

Gochnatia

Godetia

Goebelia

Goldbachia

Goldfussia

Gomphocarpus

Gomphrena

Gonatanthus

Gongronema

Goniolimon

Gonolobus

Gonospermum

Gonostegia

Gonzalagunia

Goodyera

Gordonia

Gossypium

Gouania

Gourliea

Graffenrieda

Graphistemma

Gratiola

Gravesia

Greigia

Grevillea

Grewia

Greyia

Grindelia

Grisebachianthus

Gronophyllum

Grossularia

Guaiacum

Guapira

Guazuma

Guettarda

Guiera

Guizotia

Gundelia

Gunnera

Gurania

Gutenbergia

Gutierrezia

Guttarda

Guyonia

Gymnadenia

Gymnaster

Gymnema

Gymnocarpium

Gymnocarpos

Gymnogramma

Gymnosperma

Gymnosporia

Gynandropsis

Gynerium

Gynura

Gypsophila

 

Habenaria

Hackelia

Hackelochloa

Hacquetia

Haemaria

Hagenia

Hakea

Halesia

Halimiocistus

Halimione

Halimium

Halimodendron

Halleria

Halocharis

Halogeton

Haloragis

Halothamnus

Haloxylon

 

Gamochaeta                                                Compositae

      Gamochaeta americana             Acyrthosiphon bidenticola; Aphis gossypii, spiraecola;

                                                            Aulacorthum solani; Brachycaudus helichrysi;

                                                            Neomyzus circumflexus; Uroleucon ambrosiae

       G. antillana                                 Aphis gossypii; Neomyzus circumflexus

       G. calviceps                                 Aphis gossypii

       G. pensylvanica                           Aphis gossypii; Aulacorthum solani;

                                                            Myzus ornatus, persicae; [Uroleucon rudbeckiae]

       G. purpurea                                 Brachycaudus helichrysi; Protaphis middletonii

       G. spiciformis                              Macrosiphum euphorbiae

Use key to apterae on Gnaphalium.

 

Gamolepis   see  Steirodiscus                                          Compositae

 

Garcinia                                                                 Clusiaceae

     Garcinia multiflora                   Aphis odinae

     G. spicata                                Sinomegoura citricola

Use key to polyphagous aphids.

 

 

Gardenia                                                                Rubiaceae

      Gardenia augusta = G. jasminoides

        G. cornuta                                     Aphis gossypii

      G. florida = G. jasminoides

      G. jasminoides                              Aphis aurantii, citricidus, gossypii, nasturtii, odinae,

                                                                  spiraecola;

                                                              Brachycaudus helichrysi; Macrosiphum euphorbiae;

                                                              Myzus ornatus; Neomyzus circumflexus;

                                                              Sinomegoura citricola

        G. radicans = G. jasminoides

        G. thunbergia                               Aphis aurantii, gossypii; Myzus persicae

        Gardenia spp.                               Sinomegoura rhododendri; Smynthurodes betae

Key to apterae on Gardenia:-

1.      Cauda black, long, finger-like and pointed, 0.18-0.25 Χ BL, as long as or slightly longer than SIPH, which are paler basally and darker distally                                                   …..2

-        Cauda pale or dark, if dark then rounded at apex, less than 0.16 Χ BL, and SIPH are also uniformly dark (if present)                                             …..go to key to polyphagous aphids

2.      Cauda with 12-24 hairs. SIPH dark on about distal 0.7 of length

…..Sinomegoura citricola

-        Cauda with at most 7 hairs. SIPH dark only at apices            …..Sinomegoura rhododendri

 

Garnotia   (as Granotia?)                                       Poaceae

       Garnotia sp.                                 Kaochiaoja arthraxonis (as Micromyzus granotiae)          

 

Garrya                                                         Garryaceae

      Garrya elliptica                             Myzus ornatus

      G. fadyenia                                   Aphis (Toxoptera) aurantii

Use key to polyphagous aphids.

 

Gastridium                                                                 Poaceae

      Gastridium sp.                              Rhopalosiphum padi

 

 

Gaudinia                                                     Poaceae

      Gaudinia fragilis                           Sitobion fragariae

 

Gaultheria   (including Pernettya)                               Ericaceae

       Gaultheria mucronata                  Aphis sp. (Chile, BMNH collection); Aulacorthum solani;

           (incl. var. microphylla)                    Ericaphis scammelli;

                                                              Macrosiphum euphorbiae, parvifolii;

                                                              Myzus ornatus; Neomyzus circumflexus

       G. procumbens                             Illinoia borealis

       G. shallon                                     Aulacorthum dorsatum, pterinigrum, solani;

                                                              Ericaphis wakibae; Illinoia lambersi;

                                                              Neomyzus circumflexus

       Gaultheria sp.                               Aphis (Toxoptera) aurantii;

                                                              Ericolophium sp. (Meghalaya, India; BMNH colln, leg.

                                                                  AK Samanta)

                                                             

Key to apterae on Gaultheria:-

1      SIPH and cauda both dark                                                                                                …..2

-       SIPH pale or dark, cauda pale                                                                                           …..3

2      Dorsal abdomen with dark sclerites divided into polygons. R IV+V not longer than HT II. No stridulatory apparatus                                           …..Aphis sp. (Chile, BMNH collection)

-       Dorsal abdomen without dark sclerites. R IV+V longer than HT II. Stridulatory apparatus present (fig.122)                                                                       ….. Aphis (Toxoptera) aurantii

3      Dorsal abdomen with dark markings. Head with spicules, at least ventrally                    …..4

-      Dorsal abdomen without dark markings. Head with or without spicules                         …..8

4      Dorsal abdomen with a pattern of intersegmental dark markings. ANT PT/BASE 1.7-2.8

                                                                                                                              …..Myzus ornatus

-       Dorsal thorax and abdomen usually with extensive dark sclerotisation. ANT PT/BASE

        3.2-5.2                                                                                                                               …..5

5     Dorsal abdomen with a roughly U-shaped dorsal patch. Head densely spiculose/nodulose dorsally and ventrally                                                                     …..Neomyzus circumflexus

-      Dorsal sclerotisation not U-shaped. Head with spicules mostly on ventral side surface

…..6

6     ANT III without rhinaria. SIPH 0.23-0.26 Χ BL                                  …..Ericaphis wakibae

-      ANT III with 1-5 rhinaria. SIPH 0.25-0.33 Χ BL                                                             …..7

7     Dorsal cuticle very wrinkled, variably pigmented but often mostly dark, with large marginal and post-siphuncular sclerites forming a broad dark stripe on each side of body

…..Aulacorthum pterinigrum

-      Dorsal cuticle almost smooth, variably pigmented in spino-pleural region but without dark marginal sclerites anterior to SIPH                                                 …..Aulacorthum dorsatum

8     ANT BASE VI 1.6-1.8 Χ R IV+V, which bears only 2 accessory hairs. SIPH c.0.24 Χ BL, 6.5-7.5 Χ their diameter at midlength and 1.8-2.2 Χ cauda. ANT III without rhinaria

…..Ericolophium sp. (Meghalaya, BMNH collection)

-      ANT BASE VI 0.8-1.55 Χ R IV+V, which bears 6-23 accessory hairs. SIPH either relatively shorter or more slender. ANT III often with 1 or more rhinaria on basal half

…..9

9      Inner faces of ANT tubercles rugose or spiculose. SIPH without a distinct subapical zone of polygonal reticulation (sometimes with subapical transverse striae and 1-2 rows of closed polygonal cells)                                                                                                               …..10

-       Inner faces of ANT tubercles smooth. SIPH with a distinct subapical zone of polygonal reticulation (at least 4-5 rows of closed cells)                                                                …..11

10   SIPH 1.5-1.75 Χ cauda. ANT tubercles low, with inner faces divergent and median frontal tubercle well developed. ANT III without rhinaria                            …..Ericaphis scammelli

-      SIPH 2.1-2.5 Χ cauda. ANT tubercles well-developed, with inner faces steep-sided, and median frontal tubercle much lower or undeveloped. 1-2 small rhinaria usually present on ANT III                                                                                                …..Aulacorthum solani

11   Longest hairs on ANT III 0.5-1.0 Χ BD III. SIPH pale, or dusky only at apices; cylindrical or swollen on distal half proximal to reticulated region                                                       …..12

 -     Longest hairs on ANT III 0.2-0.4 Χ BD III. SIPH rather dark, and swollen on distal half proximal to reticulated section                                                                                         …..13

12   SIPH distinctly swollen on distal half proximal to reticulated region. ANT BASE VI long and thin, 2.2-2.6 Χ R IV+V                                                            …..Macrosiphum parvifolii

-      SIPH cylindrical on distal half, sometimes a little constricted in reticulated region. ANT BASE VI 0.9-1.3 Χ R IV+V                                                      …..Macrosiphum euphorbiae

13   First tarsal segments with 5 hairs. RIV+V with 15-23 accessory hairs

…..Illinoia lambersi

-      First tarsal segments with 3 (-4) hairs. R IV+V with 7-11 accessory hairs

…..Illinoia borealis

 

Gaura                                                          Onagraceae

      Gaura biennis                               Macrosiphum gaurae, [pallidum]

       G. coccinea                                   Aphis craccivora

       G. lindheimeri                               Macrosiphum gaurae

       G. mollis                                        Macrosiphum gaurae

       G. parviflora = G. mollis

      Gaura sp.                                      [Aphis costalis]; Macrosiphum euphorbiae

Key to apterae on Gaura:-

1      Oval aphid, BL 1.1-2.3 mm. Dorsum with a black sclerotic shield. SIPH and cauda both entirely black, SIPH without polygonal reticulation                                …..Aphis craccivora

-       Spindle-shaped aphid, BL 2.0-3.9 mm. Dorsum pale. SIPH pale at least basally, with a subapical zone of polygonal reticulation                                                                           …..2

2      SIPH dark brown to black for most of length, paler basally. ANT dark. R IV+V 1.1-1.25 Χ HT II                                                                                                ….. Macrosiphum gaurae

-       SIPH mainly pale, sometimes darker towards apices. ANT mainly pale. R IV+V 0.8-1.0 Χ HT II                                                                                         ….. Macrosiphum euphorbiae

 

Gaya                                                            Malvaceae

      Gaya parviflora                             Macrosiphum euphorbiae

 

Gaylussacia                                                 Ericaceae

      Gaylussacia frondosa                   [Illinoia sp. (Leonard 1971: 80)]

        Gaylussacia sp.                             Illinoia finni

 

Gazania                                                       Compositae

      Gazania “elegans” (?)               Aphis craccivora

      G. linearis                                    Myzus ornatus, persicae

      G. longiscapa = G. linearis             

        G. pectinata                                   Aphis gossypii

        G. rigens                                       Aphis gossypii; Brachycaudus cardui, helichrysi;

                                                              Myzus persicae; Protaphis terricola;

                                                              [Uroleucon sp(p). (Leonard 1968, 344 and 1972a, 111)]

        G. uniflora = G. rigens                   

        Gazania sp.                                   Aulacorthum solani

Key to apterae on Gazania:-

1       ANT PT/BASE 0.7-1.5. SIPH dark, shorter than the short triangular, very hairy cauda

…..Protaphis terricola

-        ANT PT/BASE more than 1.5. SIPH if dark then longer than cauda                             …..2

2       Dorsum with an extensive black sclerotic shield. Mesosternum with a pair of dark mammariform processes. Cauda short and rounded                        …..Brachycaudus cardui

-       Without this combination of characters                          …..go to key to polyphagous aphids

 

Geissorhiza                                                  Iridaceae

      Geissorhiza. inaequalis                 Macrosiphum euphorbiae; Myzus persicae

Use key to polyphagous aphids.

 

Geitonoplesium                                           Philesiaceae

      Geitonoplesium cymosum            Aulacorthum solani; Myzus persicae

Use key to polyphagous aphids.

 

Gelsemium                                                  Gelsemiaceae

      Gelsemium sempervirens             [Hyalomyzus eriobotryae]

 

Genipa                                                         Rubiaceae

      Genipa americana                      Aphis (Toxoptera) aurantii

 

Genista  (including Chamaemelum, Teline)                      Leguminosae

        Genista aetnensis                          Aphis cytisorum

        G. anglica                                     Acyrthosiphon ericetorum; Aphis genistae, ononidis

        G. balansae ssp. europaea           Aphis cytisorum

       G. canariensis                               Aphis craccivora, gossypii; Myzus persicae

        G. capitata  =  Cytisus hirsutus

          G. cinerascens                              Aphis fabae

        G. cinerea                                     Acyrthosiphon pisum; Aphis cytisorum, fabae, gossypii

        G. fasselata                                   Aphis craccivora/ cytisorum group (Israel, BMNH colln)

        G. florida                                       Acyrthosiphon pisum; Aphis cytisorum

        G. germanica                                Aphis genistae

        G. horrida  =  Echinospartum horridum

          G. humifusa                                  Aphis genistae                 

        G. lydia (incl. “Cytisus rhodopeus”)    Acyrthosiphon parvum, pisum

        G. monosperma = Retama monosperma

        G. monspessulana                        Acyrthosiphon parvum

        G. myriantha = G. scorpius ssp. myriantha

        G. ovata = G. tinctoria

        G. pilosa                                        Acyrthosiphon parvum, pisum; Ctenocallis dobrovljanskyi

        G. radiata                                      Aphis genistae

        G. sagittalis                                   Acyrthosiphon pisum; Aphis cytisorum, genistae

        G. scorpius (incl. ssp. myriantha)       Aphis craccivora, cytisorum, genistae

        G. sessilifolia                                 Aphis cytisorum

       G. sphacelata = G. fasselata

       G. sphaerocarpa see Retama sphaerocarpa

       G. tinctoria                                    Acyrthosiphon genistae, pisum;

                                                             Aphis craccivora, cytisorum, genistae

       G. tridentata                                  Aphis craccivora

       G. umbellata                                 Aphis cytisorum

       Genista sp.                                    [Acyrthosiphon echinospartii]

Key to apterae on Genista:-

1     Body with a complete segmental series of long finger-like marginal processes. Cauda knobbed                                                                                     …..Ctenocallis dobrovljanskyi

-      Body without long marginal processes.  Cauda not knobbed                                           …..2

2     Body spindle-shaped, pale. ANT longer than BL. SIPH pale or dark, thin and cylindrical on distal half.  Cauda elongate finger-shaped, pale                                                               …..3

-      Body oval, often with dark dorsal markings. ANT shorter than BL. SIPH dark, tapering from base to apex. Cauda tongue-shaped, pale or dark                                                    …..6

3     ANT VI BASE less than 2 Χ R IV+V. SIPH tapering, not attenuated, less than 10 Χ their width at midlength. Cauda with 6-9 hairs                                      …..Acyrthosiphon parvum

-      ANT VI BASE more than 2 Χ R IV+V. SIPH attenuated, more than 10 Χ longer than their width at midlength. Cauda with 8-14 hairs                                                                      …..4

4     Cauda very thick; at midpoint at least 3 Χ width of SIPH at midpoint. Femoral apices pale. SIPH pale, or only dusky at extreme apices                                      …..Acyrthosiphon pisum

-      Cauda thinner; at midpoint less than 2.5 Χ width of SIPH at midpoint. Femoral apices usually dark. SIPH dark, or darkening gradually from base to apex                                …..5

5     BL less than 2.5 mm. SIPH darkening towards apex                …..Acyrthosiphon ericetorum

-      BL more than 2.5 mm. SIPH wholly dark                                   …..Acyrthosiphon genistae*

6     Cauda paler than SIPH. Dorsal abdomen without any dark markings        …..Aphis gossypii

-      Cauda as black as SIPH. Dorsal abdomen with at least some dark markings                  …..7

7      Cauda with 11-25 hairs. Dorsal abdomen usually with a few small dark spots anterior to SIPH                                                                                                                 …..Aphis fabae

-       Cauda with 4-13 hairs. Dorsal abdomen usually with extensive dark sclerotisation        …..8

8      SIPH 0.2-0.8 Χ cauda                                                                                                        …..9

-       SIPH 1.1-2.2 Χ cauda                                                                                                      …..10

9      SIPH 0.2-0.3 Χ cauda. Hairs on ANT III 0.3-0.4 Χ BD III                        …..Aphis ononidis

-       SIPH 0.5-0.8 Χ cauda. Hairs on ANT III 0.8-1.3 Χ BD III                         …..Aphis genistae

10   R IV+V 0.88-1.16 Χ HT II (mostly 0.9-1.05 Χ). Anterior half of genital plate with 2 (-3) hairs

       …..Aphis craccivora

-      R IV+V  0.97-1.3 Χ HT II (mostly 1.06-1.2 Χ). Anterior half of genital plate with 2-8 hairs (mode 4, mean 5.2)                                                                                    …..Aphis cytisorum

 

Gentiana                                                      Gentianaceae

        Gentiana asclepiadea                   Aphis fabae, gentianae,

                                                                   [gentianella Tashev (nomen nudum)];

                                                              Metopeurum gentianae

        G. aurea = Gentianella aurea

        G. cruciata                                    Aphis gentianae; [Myzus cerasi]

        G. kurroo                                      Aphis gossypii

        G. lutea                                         Aphis fabae, orocantabrica, solanella, [Aphis sp. (French

                                                                  Alps, BMNH collection, leg G. Remaudiθre)];

                                                              Aulacorthum solani

        G. olgae                                         Brachycaudus gentianae

        G. panonnica                                Aphis fabae

        G. punctata                                   Aphis fabae

        G. purpurea                                  Aphis fabae

        G. scabra                                       Macrosiphum euphorbiae

        G. schistocalyx = G. asclepiadea

        G. septemfida                                Macrosiphum euphorbiae

        G. tianschanica                             Brachycaudus cerasicola

        G. turkestanorum = Gentianella turkestanorum

        G. verna                                        Aphis gossypii

        Gentiana sp.                                 Aphis sp. (Austria, BMNH collection, leg. R.N.B. Prior)

Key to apterae on Gentiana:-

1     SIPH with a distal zone of polygonal reticulation                                                            …..2

-      SIPH without polygonal reticulation                                                                                …..3

2     ANT tubercles well developed. ANT III with 1-10 rhinaria. SIPH long, more than 10 Χ their width at midlength, with a well-developed flange and reticulation on distal 0.13-0.2 of length                                                                                          …..Macrosiphum euphorbiae

-      ANT tubercles not well developed. ANT III with 7-16 rhinaria. SIPH less than 6 Χ their width at midlength, with a small flange and reticulation on at least distal 0.33 of length

…..Metopeurum gentianae

3     Cauda helmet-shaped, shorter than its basal width, with 5 hairs

…..Brachycaudus gentianae (or cerasicola)

-      Cauda tongue-like, much longer than its basal width, with 4-25 hairs                             …..4

4      Cauda with 4-12 hairs. Longest hairs on outer side of hind tibia less than 35 μm           …..5

-       Cauda with 11-25 hairs. Longest hairs on outer side of hind tibia more than 40 μm       …..7

5     ABD TERG 1-5 and 7 with large domed marginal tubercles (MTu)        …..Aphis gentianae

-       Only ABD TERG 1 and 7 constantly with MTu; smaller MTu irregularly present on some of ABD TERG 2-6                                                                                                                …..6

6      ANT PT/BASE 2.1-3.2                                                                               …..Aphis gossypii

-       ANT PT/BASE 1.1-1.8(-2.2)                                                              …..Aphis orocantabrica

7     SIPH 0.6-0.75 Χ cauda (pale red-brown in life)…..Aphis sp., Austria (BMNH collection)

-      SIPH 0.8-1.9 Χ cauda (black in life)                                                                                …..8

8     SIPH 4.9-17 Χ longer than the longest marginal hairs on ABD TERG 2-4

…..Aphis solanella

-      SIPH 2.4-5.4 Χ longer than the longest marginal hairs on ABD TERG 2-4

…..Aphis fabae

 

Gentianella                                                 Gentianaceae

      Gentianella aurea                         Myzus icelandicus

      G. decumbens                               Brachycaudus cerasicola

      G. turkestanorum                         Brachycaudus cerasicola

 

Geoffroea                                                    Leguminosae

      Geoffroea decorticans                  Aphis craccivora

 

Geophila                                                      Rubiaceae

      Geophila macropoda                    Aphis gossypii

 

Geraea                                                         Compositae

      Geraea sp.                                     Uroleucon ambrosiae

 

Geranium                                                    Geraniaceae

        Geranium affine                           Acyrthosiphon malvae

        G. bicknellii                                   Amphorophora geranii

        G. caeruleatum                             Acyrthosiphon malvae

        G. caespitosum                             Amphorophora coloutensis

        G. collinum                                   Acyrthosiphon malvae; Maculolachnus submacula;

                                                              [Trama troglodytes]

        G. columbianum                          Acyrthosiphon malvae

        G. dahuricum                               Cryptaphis geranicola

        G. dalmaticum                              Acyrthosiphon malvae

        G. dissectum                                 Acyrthosiphon malvae; Aulacorthum solani

        G. divaricatum                              [Aphis urticata]; Indoidiopterus geranii;

                                                              Macrosiphum pseudogeranii; [Micromyzodium filicium];

                                                              Myzus sp.( India; BMNH collection, leg. A.N. Chowdhuri)

        G. erianthum                                Acyrthosiphon malvae; Cryptaphis geranicola

        G. fremontii= G. caespitosum      

        G. koreanum                                Cryptaphis geranicola

        G. lucidum                                    Acyrthosiphon malvae; Aulacorthum solani;

                                                              [Cavariella konoi]; Macrosiphum pseudogeranii;

                                                              [Micromyzodium filicium]

       G. macrorrhizum                          Amphorophora tuberculata

       G. maculatum                               Acyrthosiphon malvae; Macrosiphum geranii

       G. maderense                                Acyrthosiphon malvae

       G. mascatense                               Aphis gossypii; Brachycaudus helichrysi;

                                                              Indoidiopterus geranii; Myzus ornatus

       G. molle                                        Acyrthosiphon malvae; Aulacorthum solani;

                                                              Macrosiphum euphorbiae; Maculolachnus submacula;

                                                              Myzus ascalonicus, persicae

       G. nepalense                                 Aphis fabae; Cryptaphis geranicola;

                                                              Macrosiphum pseudogeranii

       G. ocellatum = G. mascatense          

        G. phaeum                                    Acyrthosiphon malvae

        G. potentilloides                            Aulacorthum solani

        G. pratense                                    Acyrthosiphon malvae; Macrosiphum ?geranii

        G. pseudosibiricum                       Acyrthosiphon malvae

        G. purpureum                               Acyrthosiphon malvae

        G. pusillum                                   Acyrthosiphon malvae; Aphis fabae; Aulacorthum solani;

                                                              Myzus ascalonicus; [Nasonovia ribisnigri]

        G. pyrenaicum                              Acyrthosiphon malvae

        G. renardii                                    Myzus ornatus

        G. richardsonii                              Acyrthosiphon malvae; Amphorophora coloutensis, geranii;

                                                              Macrosiphum aetheocornum, euphorbiae;

                                                              Nasonovia crenicorna

       G. robertianum                             Acyrthosiphon malvae; Aphis nasturtii; Aulacorthum solani;

                                                              Brachycaudus helichrysi; [Macrosiphum funestum];

                                                              Maculolachnus submacula;

                                                              Myzus ascalonicus, ornatus, persicae;

                                                              Indoidiopterus geranii

       G. rotundifolium                           Acyrthosiphon malvae; Aphis fabae; Myzus persicae

        G. ruprechtii                                 Acyrthosiphon malvae

       G. sanguineum                             Acyrthosiphon malvae; Aulacorthum solani;

                                                              Myzus ascalonicus

       G. saxatile                                     Acyrthosiphon malvae

       G. sibiricum                                  Acyrthosiphon malvae; Cryptaphis geranicola;

                                                              Maculolachnus submacula

       G. sylvaticum                                Acyrthosiphon malvae; Aulacorthum solani

       G. thunbergii                                Cryptaphis geranicola

        G. tuberosum                                Macrosiphum euphorbiae

        G. viscosissimum                          Amphorophora geranii, [Amphorophora sp. (see

                                                                 aphidtrek.org)];

                                                              Aulacorthum solani; Brachycaudus helichrysi;

                                                              Macrosiphum aetheocornum; Nasonovia crenicorna

        G. wallichianum                           Macrosiphum pseudogeranii; Indoidiopterus geranii

        Geranium spp.                        [Acutosiphon obliquoris];

                                                              Aphis craccivora, [geranii Hereman 1840 (nomen

                                                                nudum)], Aphis sp. (Pakistan, BMNH collection);

                                                              [Capitophorus carduinus]; [Dysaphis microsiphon];

                                                              [Macrosiphoniella sanborni];

                                                              [Macrosiphum solutum Blanchard 1939 (= Acyrthosiphon

                                                                   malvae?)];

                                                              Macrosiphum sp.(Manitoba; BMNH collection, leg. A.G.

                                                                  Robinson);

                                                              Rhopalosiphoninus staphyleae; [Thecabius affinis]

Key to apterae on Geranium (N.B. for florists’ geraniums, see Pelargonium):-

1      SIPH as pores on broad dark hairy cones                                 …..Maculolachnus submacula

-       SIPH tubular                                                                                                                     …..2

2      SIPH with a subapical zone of polygonal reticulation (at least 4-5 rows of closed cells)        

…..3

-       SIPH without polygonal reticulation, or with only 1-3 rather indistinct rows of cells

…..7

3      Distal 0.3-0.4 of femore black. SIPH wholly black. First tarsal segments with 4 hairs (including 2 sense pegs)                                                     …..Macrosiphum pseudogeraniae

-       Femora dusky or dark only at apices. SIPH pale, dusky, or pale at bases. First tarsal segments with 3 hairs (1 sense peg)                                                                                 …..4

4     R IV+V 0.8-1.0 Χ HT II                                                            …..Macrosiphum euphorbiae

-      R IV+V 1.2-1.7 Χ HT II                                                                                                   …..5

5     SIPH 1.5-1.8 Χ cauda, mainly dark, with paler basal part. R IV+V with 9-11 accessory hairs                                        …..Macrosiphum sp. (cult. Geranium sp., Manitoba: BMNH colln)

-      SIPH 2.0-2.4 Χ cauda, mainly pale, dusky or dark towards apices. R IV+V with either 5-8 or 12-16 accessory hairs                                                                                                         …..6

6     R IV+V bearing 12-16 accessory hairs. SIPH sometimes bearing 1-4 hairs (Fig.30a; but often without any)                                                                         …..Macrosiphum aetheocornum

-      R IV+V bearing 5-8 accessory hairs. SIPH without hairs                …..Macrosiphum geranii

7     Dorsal body hairs very long, the longest of them 3 or more Χ ANT BD III. Dorsal cuticle sclerotic, dark                                                                                   …..Cryptaphis geranicola

-      Dorsal body hairs less than 2 Χ BD III. Dorsal cuticle pale or dark                                 …..8

8     SIPH with 5-11 blunt or capitate hairs (Fig.30b)                            …..Nasonovia crenicorna

-      SIPH without hairs                                                                                                            …..9

9     Cuticle of head smooth, without spicules. ANT tubercles well developed, with inner faces smooth and divergent                                                                                                      …..10

-      Either cuticle of head spiculose, or ANT tubercles weakly developed or undeveloped

…..13

10   SIPH cylindrical on distal half (Fig.30c). Longest hairs on ANT III 0.3-0.6 Χ BD III

…..Acyrthosiphon malvae

-      SIPH swollen on distal half. Longest hairs on ANT III 0.7-1.0 Χ BD III                     …..11

11   ABD TERG 2-5 with marginal tubercles (MTu), usually well-developed, with 2 marginal hairs of very unequal length situated anterio-dorsad and posterio-vantrad of each tubercle (Fig.30d)                                                                                 …..Amphorophora tuberculata

-      ABD TERG 2-5 usually without MTu, and marginal hairs all of similar length             …..12

12   R IV+V 1.1-1.6 Χ HT II, with 15-25 accessory hairs. ANT III with 0-2 rhinaria

…..Amphorophora coloutensis

-      R IV+V 1.9-2.2 Χ HT II, with 30-40 accessory hairs. ANT III with 4-8 rhinaria

…..Amphorophora geranii

13   Hairs on ABD TERG 1-5 very short and thick, with clubbed apices (Fig.30f). Abdominal spiracular plates raised as rounded tubercles (Fig.30g). (Head spiculose, SIPH slightly clavate. Al. with forewing veins fuscous-bordered and media fused with Rs)                                                                                                          …..Indoidiopterus geranii

-      Hairs on ABD TERG 1-5 thin; long or short, blunt or pointed. Abdominal spiracular plates not raised. (Head smooth or spiculose, SIPH clavate, cylindrical or tapering)

…..14

14   Head spiculose, tergum very rugose. SIPH coarsely imbricated (scaly), slightly clavate, longer than ANT III. R IV+V 1.3-1.5 Χ HT II     

…..Myzus sp. H.P., India (BMMH collection)

-      If head spiculose then other characters are not in that combination                               …..15

15   SIPH black, 0.08-0.12 Χ BL, about equal in length to the dark cauda. ANT PT/BASE

       1.7-2.4 (only more than 2.0 in small specimens of BL c.1mm)

…..Aphis sp. (near spiraecola), Pakistan (BMNH collection)

-      SIPH pale or dark, if dark then relatively longer, and ANT PT/BASE also longer

…..go to key to polyphagous aphids

 

Gerardia  see  Agalinis                                                      Orobanchaceae

 

Gerbera                                                       Compositae

      Gerbera hybrida                           Aphis gossypii

       G. jamesonii                                  Aphis craccivora, fabae, gossypii, solanella, spiraecola;

                                                              Aulacorthum solani; Brachycaudus cardui, helichrysi;

                                                              Capitophorus elaeagni; Macrosiphum euphorbiae;

                                                              Myzus cymbalariae, ornatus, persicae;

                                                              Neomyzus circumflexus; Uroleucon ambrosiae, compositae

       G. macrophylla                             Aphis gossypii; [Trichosiphonaphis gerberae]

       Gerbera spp.                                 [Aphis sp. (imm. only; Portugal, BMNH collection)];

                                                              Indomasonaphis anaphalidis, rumicis; Myzus ascalonicus

Key to apterae on Gerbera:-

1           SIPH strongly swollen over about distal 0.7 of length, with greatest diameter of swelling more than twice the least diameter of the ‘stem’. Cauda bearing 14-32 hairs

…..2

-      If SIPH are at all swollen then cauda has less than 12 hairs                                             …..3

2     Cauda with 25-32 hairs. R IV+V with 9-12 accessory hairs

…..Indomasonaphis anaphalidis

-      Cauda with about 14-15 hairs. R IV+V with 2 accessory hairs

….. Indomasonaphis rumicis*

3     Cauda helmet-shaped, a little shorter than its basal width. Spiracular apertures large and rounded. SIPH with a subapical annular incision                                                             …..4

-      Cauda tongue- or finger-shaped, longer than its basal width. Spiracular apertures small and reniform. SIPH without a subapical annular incision                                                        …..5

4     Abdomen without extensive dark markings. SIPH pale, smooth, 0.9-1.5 Χ cauda. Mesosternum without mammariform processes                           …..Brachycaudus helichrysi

-      Abdomen with a extensive dark dorsal shield. SIPH dark, imbricated, 2.1-3.4 Χ cauda. Mesosternum with a pair of dark mammariform processes               …..Brachycaudus cardui

5     Long, thick capitate dorsal hairs present on head and posterior abdomen, arising from tuberculate bases. SIPH slender, pale, about as thick as hind tibia at midlength. ANT PT/BASE 6.0-9.2                                                                             …..Capitophorus elaeagni

-      Dorsal hairs, not long, thick and capitate, without tuberculate bases; if long and slightly expanded apically then SIPH are much thicker than hind tibiae at midlength, or clavate. ANT PT/BASE 1.7-7.3                                                   ….. go to key to polyphagous aphids

 

Geropogon                                                   Compositae

      Geropogon hybridus                     Brachycaudus helichrysi, tragopogonis ssp. setosus;

                                                              Uroleucon sonchi

Use key to apterae on Tragopogon.

 

Gesneria                                                      Gesneriaceae

      Gesneria cuneifolia                      Myzus persicae

 

Gesnouinia                                                  Urticaceae

      Gesnouinia arborea                      Aphis parietariae

 

Geum (including Parageum)                                          Rosaceae

      Geum aleppicum                          Amphorophora gei; [Aphis diluta];

                                                              Macrosiphum euphorbiae; Myzus ornatus;

                                                              Eriosoma japonicum (as Schizoneurella gei)

       G. calthifolium                              Acyrthosiphon shinanonus; Macrosiphum euphorbiae;

                 (incl. ssp. nipponicum)              Myzus persicae

       G. canadense                                Acyrthosiphon pseudodirhodum; Amphorophora gei, rossi;

                                                              Macrosiphum pallidum. rosae

       G. ciliatum = G. triflorum var. ciliatum

       G. coccineum = G. quellyon

       G. hispidum                                  Macrosiphum gei

       G. involucratum                           Amphorophora gei; Macrosiphum gei;

                                                              Ovatomyzus boraginacearum

         G. japonicum                               Eriosoma japonicum

        G. laciniatum                                Macrosiphum gei

        G. macrophyllum                         Amphorophora gei, rossi; Aulacorthum solani;

                                                              Macrosiphum euphorbiae, gei, valerianae;

                                                              Myzus ascalonicus

        G. montanum                               [Hyperomyzus lactucae]; Ovatomyzus boraginacearum

        G. parviflorum = G. involucratum

        G. peruvianum                             Aulacorthum solani; Rhopalosiphoninus staphyleae

        G. pyrenaicum                              Macrosiphum gei

        G. quellyon                                   Amphorophora gei; [Aphis sp. (Daveltshina 1964)];

                                                              Aulacorthum solani; Macrosiphum gei

        G. rivale                                        Acyrthosiphon malvae ssp. potha; Amphorophora gei;

                                                              Aulacorthum solani; Macrosiphum gei, valerianae;

                                                              Myzus ascalonicus, ornatus

        G. rivale Χ urbanum                     Myzus ornatus

        G. schofieldii                                 Macrosiphum euphorbiae; Myzus ornatus

        G. strictum = G. aleppicum

        G. sylvaticum                                Macrosiphum euphorbiae

        G. triflorum                                   Myzus ornatus; Macrosiphum euphorbiae, valerianae

        G. triflorum var. ciliatum             Macrosiphum kiowanepum

        G. urbanum                                  Acyrthosiphon malvae; Amphorophora gei; Aphis fabae;

                                                              Aulacorthum solani; Macrosiphum euphorbiae, gei;

                                                              Myzus ascalonicus, persicae;

                                                              Ovatomyzus boraginacearum; Sitobion fragariae

        G. virginianum                             Amphorophora rossi; Macrosiphum pallidum

        Geum spp.                                    Chaetosiphon janetscheki;

                                                              Nectarophora sp.” (Cockerell 1903: 17)]

Key to apterae on Geum:-

1      ANT PT/BASE less than 0.5.  Eyes with only 3 facets. Wax gland plates present on thorax and abdomen. SIPH as raised pores with sclerotic rims and surrounding hairs

…..Eriosoma japonicum

-       ANT PT/BASE more than 1.  Eyes multifaceted. No wax gland plates. SIPH tubular   …..2

2      SIPH with a subapical zone of polygonal reticulation (at least 4-5 rows of closed cells)

                                                                                                                                                  …..3

-       SIPH without polygonal reticulation                                                                                …..8

3      Longest hairs on ANT III 0.3-0.5 Χ BD III. ANT III with 1-4 very small rhinaria. ANT tubercles rather low, and median frontal tubercle distinctly developed                                  

                                                                                                                        …..Sitobion fragariae

-       Longest hairs on ANT III 0.6-1.3 Χ BD III. ANT III with 1-35 rhinaria of various sizes. ANT tubercles well developed, median frontal tubercle undeveloped                             …..4

4      Front of head pale, SIPH pale or dark only towards apices                                             …..5

-       Front of head dusky to dark. SIPH dark, or pale only at bases                                        …..6

5      Longest hair on ABD TERG 8 is 38-63 μm, 0.6-1.4 Χ ANT BD III. Anterior half of subgenital plate usually (77%) with only 2 hairs (18% with 3, 5% with 4-6 hairs)

                                                                                                           …..Macrosiphum euphorbiae

-       Longest hair on ABD TERG 8 is 66-106 μm, 1.4-2.0 Χ ANT BD III. Anterior half of subgenital plate with 2-11 hairs, usually (77%) with 4-8 hairs                …..Macrosiphum gei

6      Head as dark as SIPH. Hind tibiae with pale middle sections            …..Macrosiphum rosae

-       Head dusky, paler than SIPH. Hind tibiae uniformly dark or with dark apices               …..7

7      SIPH 0.73-0.95 Χ ANT III                                                             .....Macrosiphum pallidum

-       SIPH 1.03-1.30 Χ ANT III                                                           .....Macrosiphum valerianae

8      Dorsal body hairs long, thick and capitate, maximally c. 3 Χ ANT III, with prominently tuberculate bases. SIPH also with 3-4 thick capitate hairs on basal part

…..Chaetosiphon janetscheki

-       Dorsal body hairs not thick and capitate, without tuberculate bases. SIPH without hairs

…..9

9      ANT tubercles very well developed, with divergent inner faces. Cuticle of head smooth or with a few spinules ventrally. ANT III with 0-24 rhinaria                                             …..10

-       Either ANT tubercles weakly developed and head without spicules, or ANT tubercles with well-developed steep-sided inner faces and cuticle of head densely spiculose or nodulose. ANT III with 0-2(-4) rhinaria                                          …..go to key to polyphagous aphids

10   BL 0.7-1.6 mm. SIPH 0.15-0.33 mm, slender and usually slightly swollen on distal half. ANT III without rhinaria. (Al. with a dorsal abdominal black patch and sec. rhinaria on ANT III, IV and V)                                                                                  …..Ovatomyzus boraginacearum

-      BL 1.8-4.0 mm. SIPH 0.45-1.0 mm, tapering, cylindrical or evidently swollen on distal half. ANT III with 1-24 rhinaria. (Al. pale dorsally and with sec. rhinaria restricted to ANT III

       …..11

11   SIPH markedly swollen on distal half, the swollen part being smooth-surfaced. ANT III with 1-7 small rhinaria near base                                                                                     …..12

-      SIPH tapering or cylindrical, and with imbrication throughout. ANT III with 1-30 rhinaria

       …..13

12   SIPH 2.2-2.8 Χ cauda. R IV+V 1.2-1.4 Χ HT II. ANT III with 1-3 rhinaria

…..Amphorophora gei

-      SIPH 1.7-2.0 Χ cauda. R IV+V 1.4-1.6 Χ HT II. ANT III with 1-7 rhinaria

…..Amphorophora rossi

13   SIPH 0.8-1.2 Χ cauda                                                       …..Acyrthosiphon pseudodirhodum

-      SIPH 1.5-1.5 Χ cauda                                                                                                      …..14

14    R IV+V 0.8-0.9 Χ HT II                                                          …..Acyrthosiphon shinanonum

 -      R IV+V 0.92-1.4 Χ HT II                                                      …..Acyrthosiphon malvae group

 

 

Gigantochloa                                                                      Poaceae

      Gigantochloa apus                         [Aphis gossypii];

                                                              Astegopteryx minuta, pallida, unimaculata;
                                                        Ceratoglyphina bambusae; Pseudoregma bambusicola

Use key to aphids on Bambusa)

 

 

Gilia                                                             Polemoniaceae

      Gilia aggregata  =  Ipomopsis aggregata                            

        G. capitata                                     [Aphis sp. (Leonard 1974: 101)]

        G. linearis  = Collomia linearis

        G. tricolor                                      Macrosiphum euphorbiae

 

Gilibertia see Dendropanax                                   Araliaceae

      Gilibertia pellucidopunctata = Dendropanax dentiger

        G. trifida = Dendropanax trifidus                                     

 

Ginoria                                                        Lythraceae

      Ginoria americana                       Aphis spiraecola

 

Girardinia                                                   Urticaceae

      Girardinia cuspidata                     Microlophium carnosum; Myzus dycei

        G. diversifolia                                Aphis gossypii; Dysaphis microsiphon

        G. heterophylla= G. diversifolia                                               

Key to apterae on Girardinia:-

1      SIPH very small and thin, 0.03-0.08 mm long. Well-developed marginal tubercles (MTu) present on ABD TERG 1-5, and head with a large pair of spinal tubercles (STu). Cauda helmet-shaped, shorter than its basal width in dorsal view    …..Dysaphis microsiphon

-       SIPH larger, and MTu, STu and cauda not as above                                                        …..2

2      Large spindle-shaped aphid, BL more than 3 mm, ANT much longer than BL. ANT tubercles smooth, with inner faces divergent. Dorsal hairs long and pointed. SIPH long, tapering and normally imbricated, with flared apices                  …..Microlophium carnosum

-       Small oval aphid, BL less than 2 mm, ANT much shorter than BL. ANT tubercles scabrous, with inner faces apically convergent. Dorsal hairs inconspicuous. SIPH thick and scaly for most of length, with smooth tapering distal part that is somewhat bent outwards

        …..Myzus dycei

 

Girgensohnia                                              Amaranthaceae

      Girgensohnia oppositiflora           Brachyunguis salsolaceanum

 

Gladiolus                                                     Iridaceae

      Gladiolus communis                    Aphis gossypii; Macrosiphum euphorbiae;

                                                              [Myzaphis rosarum]; Myzus persicae

        G. dalenii                                      Myzus ascalonicus

        G. Χgandavensis                           [Aphis newtoni; Dysaphis tulipae;

                                                              Metopolophium dirhodum; Sitobion akebiae

        G. hortulanus                               Aphis fabae, spiraecola; Macrosiphum euphorbiae

        G. Χhybridus                                 Dysaphis tulipae; Myzus persicae; Neomyzus circumflexus

        G. italicus                                      Aphis fabae, gossypii; Dysaphis tulipae 

        G. primulinus = G. dalenii

        G. watsonioides                             Aphis gossypii

        Gladiolus ssp.                               Aphis craccivora; Aulacorthum solani;

                                                              Myzus cymbalariae, ornatus;

                                                              Rhopalosiphoninus latysiphon, staphyleae;

                                                              Sitobion africanum, fragariae, graminis, [phyllanthi],

                                                                  [wikstroemiae];

                                                              Smynthurodes betae

Key to apterae on Gladiolus:-

1        Cauda helmet-shaped (“pentagonal”), not longer than its basal width, with 4-6 hairs. Head and ABD TERG 8, or 7 and 8, with paired spinal tubercles (STu), and marginal tubercles (MTu) present on prothorax and ABD TERG 1-5, or 1-5 and 7

…..Dysaphis tulipae

-      Cauda (if at all evident) triangular or tongue-shaped, longer than its basal width, with 4-25 hairs. STu absent from head, rarely on ABD TERG 7-8. MTu absent or only regularly present on ABT TERG 1 and 7                                                                                         …..2

2     SIPH dark, tapering, with a subapical zone of polygonal reticulation. Hairs on ANT III less than 0.6 Χ BD III                                                                                                              …..3

-      SIPH (if present) pale or dark, but if dark then either without subapical polygonal reticulation, or strongly swollen. Hairs on ANT III more or less than 0.6 Χ BD III         .....6

3     Cauda dark like SIPH                                                                             …..Sitobion graminis

-      Cauda pale                                                                                                                         …..4

4      R IV+V 0.65-0.75 Χ HT II. Longest hairs on ANT III 20-30 μm           …..Sitobion akebiae

-       R IV+V 0.75-0.9 Χ HT II. Longest hairs on ANT III 12-20 μm                                      …..5

5      Cauda 0.43-0.55 SIPH and 1.9-2.6 Χ HT II. Dorsal abdominal sclerotisation often extensive, but not segmentally divided and with ill-defined edges                        …..Sitobion fragariae

-      Cauda 0.53-0.6 Χ SIPH and 2.4-3.0 Χ HT II. Dorsal abdominal sclerotisation very variable, but when well developed it is segmentally divided and has well-defined edges

…..Sitobion africanum

6      SIPH cylindrical, pale, without subapical polygonal reticulation. R IV+V 0.55-0.75 Χ HT II                                                                                                    .....Metopolophium dirhodum

-       Without that combination of characters; if SIPH are pale, cylindrical (i.e not swollen) and lack subapical reticulation then R IV+V is 0.95-1.35 Χ HT II

…..go to key to polyphagous aphids

 

Glandora                                                     Boraginaceae

      Glandora diffusa                          Aphis fabae; Brachycaudus helichrysi; 

                                                              [Ovatomyzus chamaedrys]

Use key to polyphagous aphids.

 

Glandularia                                                 Verbenaceae

      Glandularia bipinnatifida             Aphis gossypii

      G. canadensis                               [Aphis aubletia]; Myzus ornatus; Protaphis middletonii

        G. peruviana                                 Acyrthosiphon malvae; Aphis [capsellae], gossypii;

                                                              Brachycaudus helichrysi; Myzus ornatus

Use key to polyphagous aphids.

 

Glaucium                                                     Papaveraceae

      Glaucium corniculatum               Acyrthosiphon glaucii, ilka

        G. elegans                                     Acyrthosiphon glaucii

      G. fimbrilligerum                          Acyrthosiphon glaucii

        G. flavum                                      Acyrthosiphon ilka, lambersi; Aphis fabae;

                                                              Aulacorthum solani; Brachycaudus helichrysi;                  

                                                              [Cavariella theobaldi]; Macrosiphum euphorbiae;

                                                              [Sitobion avenae]

        G. grandiflorum                           Acyrthosiphon lambersi

        G. leiocarpum                               Acyrthosiphon ilka, lambersi

        G. luteum = G. flavum                    

        G. squamigerum                           Acyrthosiphon glaucii

        Glaucium spp.                              [Siphonophora glaucii Lichtenstein (nomen nudum)]

Key to apterae on on Glaucium:-

1      SIPH pale, or only dusky towards apex, cylindrical for most of length, normally imbricated, without subapical polygonal reticulation                                                                           …..2

-       SIPH pale or dark, but if pale then either very short, smooth and conical, or with subapical polygonal reticulation                                                      …..go to key to polyphagous aphids

2      Head spinulose, with inner faces of ANT tubercles steep-sided, almost parallel

…..Aulacorthum solani

-       Head smooth with ANT tubercles, either weakly developed or with inner faces divergent

…..3

3      SIPH short, less than 0.15 Χ BL, and less than 1.5 Χ cauda            …..Acyrthosiphon glaucii

-       SIPH 0.18-0.34 Χ BL, more than 1.7 Χ cauda                                                                  …..4

4      ANT tubercles well developed. ANT PT/BASE 3.0-3.7. SIPH without any trace of subapical swelling                                                                                                  …..Acyrthosiphon ilka

-       ANT tubercles weakly developed. ANT PT/BASE 1.9-2.8. SIPH with a very slight swelling immediately proximal to flange                                                     …..Acyrthosiphon lambersi

 

Glaux see Lysimachia                                              Primulaceae

      Glaux maritima= Lysimachia maritima

 

Glechoma                                                    Lamiaceae

      Glechoma grandis                        Aulacorthum glechomae

      G. hederacea                                 Aphis nasturtii; Aulacorthum glechomae, solani;

                                                              [Cavariella aegopodii]; [Cryptomyzus galeopsidis];

                                                              Macrosiphum euphorbiae; Myzus ascalonicus, ornatus;

                                                              Ovatus glechomae; Prociphilus erigeronensis;

                                                              Rhopalosiphoninus staphyleae ssp. tulipaellus

Key to apterae on Glechoma:-

1     ANT 0.25-0.3 Χ BL, with PT/BASE less than 1. Cauda and anal plate both extended posteriorly, together forming a dark hairy rounded protruberance. SIPH absent                    

                                                                                                           …..Prociphilus erigeronensis

-      ANT 0.5-1.6 Χ BL, with PT/BASE 1.7-5. Cauda and anal plate normal. SIPH present

…..2

2     SIPH evidently swollen, with maximum diameter of swollen part 1.3-2.1 Χ minimum diameter of basal part                                                                                                        …..3

-      SIPH tapering or cylindrical                                                                                              …..4

3     SIPH with minimum diameter of basal part (“stem”) greater than that of hind tibia at midlength, and swollen part as wide as base of cauda. SIPH 3.1-4.3 Χ R IV+V. ANT III with 1-3 rhinaria near base. Dorsum with dark markings

                                                                           …..Rhopalosiphoninus staphyleae ssp. tulipaellus

-      SIPH with minimum diameter of “stem” less than that of hind tibia at midlength, and swollen part about half as wide as base of cauda. SIPH 1.8-2.5 Χ R IV+V. ANT III without rhinaria. Dorsum without dark markings                                               …..Myzus ascalonicus

4      Front of head smooth, with ANT tubercles either very weakly developed or well-developed with divergent inner faces           …..go to key to polyphagous aphids, starting at couplet 16

-      Front of head scabrous or spiculose, and ANT tubercles well-developed with steep-sided, almost parallel or convergent inner faces                                                                          …..5

5      ANT III without rhinaria. Inner faces of ANT tubercles convergent or with convergent processes                                                                                                                            …..6

-      ANT III usually with 1-3 small rhinaria near base. Inner faces of ANT tubercles approximately parallel                                                                                                       …..7

6      Head and appendages mainly dark. ANT PT/BASE 3.5-4.3. R IV+V with 4-6 accessory hairs. Dorsal abdomen without small dark intersegmental spots. (Immatures with smooth hind tibiae)                                                                                            …..Ovatus glechomae

-      Head and appendages pale. ANT PT/BASE 1.7-2.8. R IV+V with 2 accessory hairs. Dorsal abdomen ornamented with a pattern of small dark intersegmental spots. (Immatures with spinulose hind tibiae)                                                                                   …..Myzus ornatus

7      Cauda with 6-8, usually 7, hairs. R IV with 5-7 accessory hairs. (Immatures with smooth hind tibiae)                                                                                          …..Aulacorthum solani

-       Cauda with 4-5 hairs. R IV with 2 accessory hairs. (Immatures with spinulose hind tibiae)                                                                                                     …..Aulacorthum glechomae*

 

 

 Gleditsia                                                                                 Leguminosae

       Gleditsia japonica                         Aphis craccivora; Brachycaudus helichrysi;

                                                             Myzus persicae; Pseudomegoura magnoliae

       G. triacanthos                               Aphis craccivora, fabae; Myzus persicae

 

Use key to polyphagous aphids.
 

Glehnia                                                        Apiaceae

      Glehnia littoralis                           Macrosiphum euphorbiae; Semiaphis heraclei

 

Gleichenia                                                   Gleicheniaceae

      Gleichenia sp.                               Amphorophora ampullata ssp. bengalensis

 

Glinus                                                          Molluginaceae

      Glinus lotoides                              Aphis gossypii

        G. radiatus                                    Aphis gossypii

 

Gliricidia                                                                Leguminosae

      Gliricidia sepium                          Aphis craccivora, gossypii

Use key to polyphagous aphids.

Glochidion                                                             Euphorbiaceae

     Glochidion assamicum = G. ellipticum

     G. cyrtostylum                                Aphis eugeniae

     G. ellipticum                            Schoutedenia ralumensis

     G. fortunei                                      Aphis eugeniae

     G. hongkongense                           Aphis eugeniae

     G. obscurum                                   Aphis eugeniae

     G. philippinense                             Schoutedenia ralumensis

     G. puberum                                    [Greenidea (Trichosiphum) anonae];

                                                              Micromyzus hangzhouensis; Schoutedenia ralumensis

     G. sphaerostigmum                        Schoutedenia ralumensis

     G. wilsonii                                       Schoutedenia ralumensis

     G. wrightii                                       Schoutedenia ralumensis

     G. zeylanicum                                 Schoutedenia ralumensis

     Glochidion spp.                              Aphis aurantii, craccivora, fabae, spiraecola;

                                                              [Eutrichosiphum makii, pasaniae, takahashii];

                                                              [Greenidea quercicola]

Key to species:-

1    SIPH tubular with numerous long hairs  .....Greenideini spp.

      (Glochiodion may be visited casually or used as a reserve host by various Greenideini)

-     SIPH if tubular then without hairs                                                                                      .....2

2    ABD TERG 7 with a pair of large backward-pointed processes. Antenna 5-segmented, ANT PT/BASE less than 1. Aptera with 3-facetted eyes                      .....Schoutedenia ralumensis

-     ABD TERG 7 without large processes. Antennae 6-segmented, ANT PT/BASE more than 1. Aptera with multifacetted eyes                                                                                           .....3

3    Antennal tubercles well developed. Aptera with 1-3 secondary rhinaria on ANT III

.....Micromyzus hangzhouensis

-     Antennal tubercles weakly developed. Aptera without secondary rhinaria on ANT III          

.....go to key to polyphagous aphids, starting at couplet 14

 

Glossanthus                                                 Gesneriaceae

      Glossanthus sp.                            [Aphis verticolor Rafinesque 1817 (invalid name)]

 

Gloxinia                                                      Gesneriaceae

      Gloxinia digitaliflora                    Myzus persicae; Neomyzus  circumflexus

       Gloxinia spp.                                Aphis craccivora; Aulacorthum solani; Myzus ornatus

Use key to polyphagous aphids.   

 

Glyceria                                                       Poaceae

      Glyceria aquatica = G. maxima

        G. declinata                                   Sipha glyceriae

        G. fluitans                                     Laingia psammae; Metopolophium dirhodum;

                                                              Rhopalomyzus lonicerae, poae;

                                                              Rhopalosiphum oxyacanthae, nymphaeae, padi;

                                                              Sipha glyceriae; Sitobion avenae, graminis, fragariae

        G. grandis                                     Sitobion avenae

        G. maritima = Puccinellia maritima

        G. maxima                                    Metopolophium dirhodum; Rhopalomyzus poae;

                                                              Rhopalosiphum oxyacanthae, padi; Sipha glyceriae;

                                                              Sitobion avenae, fragariae                                                 

        G. natans = Torreyochloa natans

        G. nemoralis                                 Rhopalosiphum padi; Sitobion avenae

        G. notata                                       Melanaphis pyraria; Metopolophium dirhodum;

                                                              Rhopalosiphum padi; Sipha glyceriae; Sitobion avenae

        G. plicata = G. notata

        G. pulchella                                  Metopolophium dirhodum;  Sitobion fragariae

        G. striata (incl. nervata)                    Carolinaia howardii; Sipha glyceriae

Use key to apterae of grass-feeding aphids under Digitaria.

 

Glycine                                                        Leguminosae

      Glycine hispida = G. max

        G. javanica = Neonotonia wightii    

        G. max (incl. ssp. soja)                 Acyrthosiphon gossypii, pisum;

                                                              Aphis craccivora, fabae, glycines, gossypii;

                                                              Aulacorthum solani; [Hyadaphis coriandri];

                                                              Macrosiphum euphorbiae; Myzus [dycei],  persicae;

                                                              Neomyzus circumflexus; [Pemphigus sp.]

        G. ussuriensis = G. max ssp. soja     

Key to apterae on Glycine:-

1      SIPH with a subapical zone of polygonal reticulation (at least 4-5 rows of closed cells)

…..2

-       SIPH without polygonal reticulation                                                                                …..3

2      SIPH black. R IV+V 1.1-1.2 Χ HT II. ABD TERG 8 with 4-6 hairs                                      

                                                                                                               …..Sitobion nigrinectarium

-       SIPH pale or dusky. R IV+V 0.95-1.1 Χ HT II. ABD TERG 8 with 6-8 hairs

                                                                                                            …..Macrosiphum euphorbiae

3      ANT tubercles well-developed. SIPH pale or dusky. ABD TERG 1 and 7 without MTu

…..4

-       ANT tubercles weakly developed. SIPH dark. ABD TERG 1 and 7 with MTu             …..8

4     Head smooth, with divergent ANT tubercles. SIPH very attenuate distally. ANT BASE VI 1.8-2.9 Χ R IV+V                                                                                                              …..5

-      Head spiculose or nodulose, with inner faces of ANT tubercles parallel or convergent apically. SIPH not attenuate distally. ANT BASE VI 0.8-1.6 Χ R IV+V                       …..6

5     SIPH 0.42-0.50 Χ BL and 2.5-3.5 Χ cauda                                      .....Acyrthosphon gossypii

-      SIPH 0.23-0.38 Χ BL and 1.2-1.9 Χ cauda                                        .....Acyrthosiphon pisum

6     Dorsum with a large black roughly U-shaped patch, and black cross-bands on thorax. (Immatures with spinulose hind tibiae)                                         …..Neomyzus circumflexus

-      Dorsum without dark markings. (Immatures with smooth hind tibiae)                            …..7

7      SIPH tapering or cylindrical. ANT III almost always with 1-2 small rhinaria near base

                                                                                                                     …..Aulacorthum solani

-       SIPH slightly clavate. ANT III without rhinaria                                        …..Myzus persicae

8      Dorsal abdomen with an extensive black shield. Cauda black                …..Aphis craccivora

-       Dorsal abdomen without dark markings. Cauda paler than SIPH                                    …..9

9      Cauda 0.08-0.135 Χ BL (only more than 0.12 Χ BL in very small specimens with BL less than 1 mm), and 0.8-1.25 Χ ANT V; pale to dusky, without a constriction, less than 3 Χ longer than its width at midlength, and bearing 4-7 (usually 5-6) hairs       …..Aphis gossypii

-       Cauda 0.12-0.175 Χ BL, and 1.05-1.7 Χ ANT V; very pale, usually with a slight mid-way constriction, more than 3 Χ longer than its narrowest width at midlength, and bearing 5-10 (usually 7-9) hairs                                                                                         ..…Aphis glycines

 

Glycosmis                                                    Rutaceae

      Glycosmis arborea                        Aphis spiraecola

        G. pentaphylla                              Greenidea ficicola, heeri

Key to apterae on Glycosmis:-

(The Greenidea spp. may be vagrants or using this plant as a “reserve host”.)

1      SIPH covered with numerous long hairs                                                                           …..2

-       SIPH without hairs                           …..Aphis spiraecola (or try key to polyphagous aphids)

2      SIPH reticulated only at base, and rather densely spinulose over most of length

                                                                                                                           …..Greenidea heeri

-       SIPH reticulated over most of length, spinulose only on distal part

…..Greenidea ficicola

 

Glycyrrhiza                                                  Leguminosae

      Glycyrrhiza aspera                        Acyrthosiphon gossypii; Aphis craccivora

        G. echinata                                   Aphis craccivora

      G. glabra                                       Acyrthosiphon gossypii, pisum;

                                                              Aphis craccivora, cytisorum, gossypii, [medicaginis]

        G. lepidota                                     Aphis craccivora

        G. triphylla                                    Acyrthosiphon pisum; Aphis craccivora

        G. uralensis                                   Acyrthosiphon gossypii; Aphis craccivora

        Glycyrrhiza sp.                              Aphis fabae

Key to apterae on Glycyrrhiza:-

1     ANT tubercles very well developed, with smooth divergent inner faces. SIPH pale and attenuated distally, thinner than hind tibiae at their respective midpoints                       …..2

-      ANT tubercles weakly developed. SIPH dark, thicker than hind tibiae at their respective midpoints                                                                                                                           …..3

2     SIPH 0.42-0.50 Χ BL and 2.5-3.5 Χ cauda                                    …..Acyrthosiphon gossypii

-      SIPH 0.22-0.37 Χ BL and 1.2-1.9 Χ cauda                                       …..Acyrthosiphon pisum

3     Dorsum usually with a black sclerotic shield, which under the microscope has a distinct pale reticulation that follows the reticulate sculpturing of the cuticle; sometimes this shield is reduced of fragmented (especially in small specimens developing at higher temperatures), but there are usually at least some small fragments showing a reticulate pattern. SIPH and cauda both black                                                                                                               …..4

-      Dorsum without a black sclerotic shield or reticulated sclerites. SIPH dark, cauda pale, dusky or dark                                                                                                                    …..5

4     R IV+V 0.88-1.16 Χ HT II (mostly 0.9-1.05 Χ). Anterior half of genital plate with 2 (-3) hairs

       …..Aphis craccivora

 -    R IV+V  0.97-1.3 Χ HT II (mostly 1.06-1.2 Χ). Anterior half of genital plate with 2-8 hairs (mode 4, mean 5.2)                                                                                    …..Aphis cytisorum

5     SIPH and cauda both black, the latter bearing 11-25 hairs                               …..Aphis fabae

-     SIPH distinctly darker than cauda, which bears 4-7(-8) hairs                      …..Aphis gossypii

 

Gmelina                                                                  Lamiaceae

     Gmelina arborea                      Aphis gossypii               

 

Gnaphalium (including Omalotheca)                          Compositae

      Gnaphalium affine                       [Aphis gnaphalii Shinji 1927];

                                                             [Macrosiphoniella yomogifoliae]

       G. americanum = Gamochaeta americana

       G. antillanum = Gamochaeta antillana

       G. arenarium = Helichrysum arenarium                                                                                        

       G. argenteum                                Macrosiphum euphorbiae

       G. attenuuatum                            Aphis spiraecola; Brachycaudus helichrysi

       G. beneolens = Pseudognaphalium microcephalum

       G. bicolor = Pseudognaphalium bioletti

      G. brachypterum = Pseudognaphalium brachypterum

       G. californicum = Pseudognaphalium californicum

       G. caucasicum = Gnaphalium sylvaticum

       G. chilense = Helichrysum chilense

       G. declinatum                               Aphis spiraecola

       G. decurrens                                 Nectarophora sp.” – Cockerell 1903: 171]

       G. dioicum  = Antennaria dioica

       G. erectum                                    Pemphigus populinigrae

       G. germanica = Filago vulgaris      

       G. hypoleucum                             Capitophorus gnathalifoliae

       G. indicum                                    Aphis gossypii

       G. inornatum = Pseudognaphalium inornatum

       G. japonicum                                Aphis gossypii; Brachycaudus helichrysi;

                                                              Oedisiphum compositarum

       G. leontopodium = Leontopodium alpinum

       G. luteoalbum = Helichrysum luteoalbum                                  

       G. multiceps = Helichrysum luteoalbum

        G. norvegicum                              Brachycaudus helichrysi

        G. obtusifolium = Pseudognaphalium obtusifolium

        G. peregrinum = Gamochaeta pensylvanica

        G. polycephalum                          Aphis gossypii;

                                                              [Uroleucon sp. (as Dactynotus - Leonard 1968, 345)]

        G. portoricense                             Uroleucon ambrosiae

        G. purpureum = Gamochaeta purpurea

        G. spathulatum = Gamochaeta pensylvanica

        G. supinum                                   Macrosiphoniella olgae   

        G. sylvaticum                                Brachycaudus helichrysi; Macrosiphoniella olgae;

                                                              Oedisiphum compositarum; Pemphigus populinigrae;

                                                              Pleotrichophorus filaginis, [?glandulosus];

                                                              [Trama troglodytes]; [Uroleucon cichorii]

        G. uliginosum                               Aphis nasturtii, [Aphis sp.(Davletshina 1964)];

                                                              Aulacorthum solani; Brachycaudus helichrysi;

                                                              Myzus ornatus; Pemphigus populinigrae;

                                                              Uroleucon gobonis

        G. undulatum                               Aulacorthum solani; Brachycaudus helichrysi;

                                                              Myzus persicae; Uroleucon compositae

        Gnaphalium spp.                         Aphis craccivora, [Aphis (Protaphis) sp.(Mier Durante

                                                                  1978, 93)];

                                                              [Cavariella salicicola]; [Dysaphis microsiphon];

                                                              Hyperomyzus (Neonasonovia) sp. (U.P., India; BMNH

                                                                  collection, leg. D. Bhattacharya);

                                                              Pemphigus sp. (India, U.P., BMNH collection);

                                                              Rhopalosiphum rufiabdominale;

                                                              Tuberocephalus sp. (Japan, BMNH collection);

                                                  Uroleucon erigeronense, sinuense

Key to apterae on Gnaphalium and Pseudognaphalium:-

1     SIPH absent. ANT about 0.2 Χ BL, with PT/BASE 0.17-0.20. ABD TERG 3-7 with wax gland plates                                                                                                                       …..2

-      SIPH present, ANT more than 0.3 Χ BL, with PT/BASE more than 0.5. No wax gland plates

       …..3

2     R IV+V 1.2-1.4 Χ HT II                                                              …..Pemphigus populinigrae

-      R IV+V 0.8-0.9 Χ HT II              …..Pemphigus sp. (?mordwilkoi; India, BMNH collection)

3     Dorsal hairs numerous, with fan-shaped or capitate apices, arising from tuberculate bases

       …..4

-      Dorsal hairs without fan-shaped or capitate apices, with or without tuberculate bases

…..5

4     SIPH swollen on distal part. ANT I with capitate hairs arising from tuberculate bases

…..Capitophorus gnathalifoliae*

-      SIPH cylindrical (slightly flared at apex). ANT I without capitate hairs

…..Pleotrichophorus filaginis

5     Cauda helmet-shaped, slightly constricted near base, shorter than or not clearly longer than its basal width, and bearing 4-6 hairs                                                                                …..6

-      Cauda bluntly conical, tongue- or finger-shaped, either distinctly longer than its basal width or bearing more than 10 hairs                                                                                            …..8

6      RIV+V less than 0.15 mm long, 1.1-1.5 Χ HT II. SIPH conical, pale, almost smooth. Spiracular apertures large and rounded. Tergum membranous

…..Brachycaudus helichrysi

-       R IV+V more than 0.20 mm long, more than 2 Χ HT II. SIPH dark, cylindrical or slightly swollen, imbricated. Spiracular apertures small and reniform. Tergum with variably developed dark sclerotisation                                                                                            …..7 

7      Longest hairs on ANT III 12-15 μm, shorter than ANT BD III, and longest hairs on ABD TERG 3 15-36 μm, less than 2 Χ ANT BD III                        …..Oedisiphum compositarum

-       Longest hairs on ANT III 18-21 μm, as long as or longer than ANT BD III, and longest hairs on ABD TERG 3 50-60 μm, more than 2 Χ ANT BD III           …..Oedisphum soureni

8      ANT tubercles undeveloped or weakly developed, or if well developed then densely spiculose or scabrous and with parallel or apically convergent inner faces. SIPH without a subapical zone of polygonal reticulation                                                                           …..9

-       ANT tubercles well developed, with almost smooth, divergent inner faces. SIPH often with distal or subapical polygonal reticulation                                                                        …..10

9      Eyes reduced to 10-30 facets, with no distinct ocular tubercle (triommatidium). ANT I very wide, 2 or more Χ thicker than ANT II

…..Tuberocephalus sp. (Japan, BMNH collection)

-       Eyes with many more than 30 facets and a distinct ocular tubercle. ANT I less than 2 Χ thicker than ANT II                                                        …..go to key to polyphagous aphids

10    SIPH pale, or dusky towards apices                                                                               …..11

-       SIPH uniformly dark, or paler only in middle                                                                …..13

11    SIPH cylindrical on distal half, with reticulation on subapical 0.13-0.20 of length. R IV+V 0.9-1.1 Χ HT II                                                                           …..Macrosiphum euphorbiae

-       SIPH swollen on distal half, if with reticulation than this does not extend beyond 0.07 of length. R IV+V 1.5-2.3 Χ HT II                                                                                     …..12

12    Thoracic spiracles similar in size to abdominal ones. R IV+V 1.5-1.7 Χ HT II. SIPH 2.2-2.5 Χ cauda, imbricated and with some subapical reticulation. ANT III with rhinaria regularly spaced in a row                                                                                         …..Illinoia richardsi

-       Thoracic spiracles much larger than abdominal ones. R IV+V c.2.3 Χ HT II. SIPH 1.4-1.5 Χ cauda, almost smooth, without subapical reticulation. ANT III with rhinaria clustered on swollen part near base                                                   …...Hyperomyzus (Neonasonovia) sp.

                                                                     (U.P., India; BMNH collection, leg. D. Bhattacharya)

13    SIPH more than 10 Χ longer than their width at midlength, with at most 1-3 rows of subapical polygonal reticulation. Hairs on ABD TERG 1-5 much shorter than ANT BD III, and without pigmented basal scleroites                                     …..Acyrthosiphon bidenticola

-       SIPH thicker, less than 10 Χ their width at midlength, with many rows of polygonal reticulation. Hairs on ABD TERG 1-5 longer than ANT BD III and often arising from pigmented scleroites                                                                                                        …..14

14    SIPH about 1.1-1.2 Χ cauda, and reticulated over about half of length                                  

…..Macrosiphoniella olgae*

-       SIPH 1.1-2.3 Χ cauda, and reticulated over distal 0.23-0.40 of length                          …..15

15    Cauda dark. SIPH 1.8-2.1 Χ cauda. ANT III with 51-77 rhinaria

…..Uroleucon compositae (or gobonis?)

-       Cauda either entirely pale or faintly smoky on distal half. SIPH 1.1-2.3 Χ cauda. ANT III with 5-46 rhinaria                                                                                                            …..16

16    Coxae dark. Dorsal hairs not arising from dark scleroites                      …..Uroleucon sonchi

-       Coxae pale. Dorsal hairs with or without dark basal scleroites                                       …..17

17    SIPH distally dark and basally pale. Cauda with one or more distal hairs short and blunt or capitate. ANT III with 5-17 rhinaria. R IV+V longer than HT II. Dorsal cephalic hairs 18-36 μm                                                                                                  .....Uroleucon erigeronense

-       SIPH entirely dark. Cauda with all hairs of normal length. Other characters not in that combination                                                                                                                      .....18

18    R IV+V with no more than 10 accessory hairs                                                                .....19

-       R IV+V with 12-32 accessory hairs                                                                                 .....22

19    Cauda faintly dusky to brown on distal half only                                     .....Uroleucon chani

-       Cauda pale or uniformly dusky over entire length                                                                20

20    R IV+V 1.8-2.3 Χ HT II. SIPH 1.5-1.8 Χ cauda, which is dusky      …..Uroleucon russellae

-       R IV+V 0.9-1.5 Χ HT II. SIPH 1.1-1.3 Χ cauda, which is pale                                            21

21   HT II rather long and thin, about 6 Χ its maximum thickness, and 0.9-1.1 Χ R IV+V

                                                                                                        …..Uroleucon pseudambrosiae

-      HT II shorter, less than 5 Χ its maximum thickness and 0.7-0.85 Χ R IV+V

…..Uroleucon ambrosiae

22   R IV+V 0.25-0.27 mm, with 12-19 accessory hairs that are 22-35 μm long. SIPH reticulated over 0.30-0.41 of length                                                                       .....Uroleucon sinuense

-      R IV+V 0.14-0.23 mm, with 20-32 accessory hairs that are 32-50 μm long. SIPH reticulated over 0.21-0.35 of length                                                                      .....Uroleucon gnaphalii

 

Gnidia                                                          Thymelaeaceae

      Gnidia sp.                                     Sitobion wikstroemiae

 

Gochnatia                                                    Compositae

      Gochnatia sp.                               Uroleucon gochnatiae                                                        

 

Godetia  see  Clarkia                                                          Onagraceae

 

Goebelia see Sophora                                                        Leguminosae

 

Goldbachia                                                            Brassicaceae

      Goldbachia laevigata                    Aphis gossypii

 

Goldfussia  see  Strobilanthes                                        Acanthaceae

 

Gomphocarpus                                            Apocynaceae

        Gomphocarpus cornutus = G. fruticosus

        G. fruticosus                                 Aphis fabae, gossypii, nerii; Myzus persicae

        G. lanatus = G. tomentosus

        G. physocarpus                             Aphis gossypii, nerii

        G. purpurascens                           Aphis nerii

        G. sinaicus                                    Aphis nerii

        G. tomentosus                               Aphis nerii

Use key to polyphagous aphids.

 

Gomphrena                                                 Amaranthaceae

      Gomphrena celosioides                Aphis gossypii; [Hysteroneura setariae]

       G. globosa                                     Aphis gossypii; Aulacorthum solani;

                                                              Macrosiphum euphorbiae, [salviae], stellariae;

                                                              Myzus certus, persicae; Rhopalosiphoninus staphyleae

Use key to polyphagous aphids, but note that specimens running to Macrosiphum euphorbiae could be M. stellariae, and those running to Myzus persicae could be M. certus; for separation of these species-pairs see the key to aphids on Dianthus, couplets 3 and 16 respectively. 

 

Gonatanthus                                                Araceae

      Gonatanthus sp.                           Aphis asclepiadis

 

Gongronema                                               Apocynaceae

      Gongronema latifolium                Aphis gossypii

       G. nepalense                                 [Greenidea ficicola]

                                            

Goniolimon                                                 Plumbaginaceae

      Goniolimon rubellum                   Staticobium latifoliae

        G. speciosum                                Rhopalosiphoninus staphyleae

        G. tataricum                                  Staticobium gmelini, insularum

Use key to aphids on Limonium.

 

Gonolobus see Ampelamus                                    Apocynaceae

      Gonolobus laevis = Ampelamus laevis

 

Gonospermum                                             Compositae

      Gonospermum fruticosum           [Brevicoryne brassicae]

 

Gonostegia                                                  Urticaceae

      Gonostegia hirta                           Aphis citricidus, gossypii, nasturtii, spiraecola;

                                                              Brachycaudus helichrysi

Use key to polyphagous aphids.

 

Gonzalagunia  (including Duggena)                          Rubiaceae

      Gonzalagunia brachyantha         Aphis (Toxoptera) aurantii

        G. hirsuta                                      Aphis aurantii, gossypii

        G. spicata = G. hirsuta

Use key to polyphagous aphids.

 

Goodyera                                                     Orchidaceae

      Goodyera sp.                                 Ericaphis ?wakibae (see aphidtrek.org)

 

Gordonia                                                     Theaceae

      Gordonia axillaris                         Aphis (Toxoptera) aurantii

      G. ekmanii                                    Aphis (Toxoptera) aurantii                                                 

      G. obtusa                                       Aphis (Toxoptera) aurantii

 

Gossypium                                                   Malvaceae

      Gossypium arboreum                   Aphis gossypii; Myzus persicae

        G. barbadense                               Aphis gossypii

        G. herbaceum                               Acyrthosiphon gossypii, [gossypicola];

                                                              Aphis craccivora, fabae, frangulae, gossypii, spiraecola;

                                                              Brachyunguis harmalae (as  plotnikovi);

                                                              Macrosiphum euphorbiae; Myzus persicae;

                                                              Protaphis middletonii; Rhopalosiphum rufiabdominale;

                                                              Smynthurodes betae

        G. hirsutum                                  Acyrthosiphon gossypii; Aphis craccivora, gossypii;

                                                              Brachyunguis harmalae (as  plotnikovi);  Myzus persicae;

                                                              Neomyzus circumflexus; Smynthurodes betae

        G. indicum = G. arboreum

        G. nanking = G. herbaceum

        G. sturtianum                               Aphis gossypii

        Gossypium spp.                            Aphis [poacyni], [umbrella]; Rectinasus buxtoni

Key to apterae on Gossypium:-

1      ANT PT/BASE less than 0.3. Body and appendages densely hairy. SIPH absent          …..2

-      ANT PT/BASE at least 0.5. Body and appendages not densely hairy. SIPH present     …..3

2     ANT V BASE and R IV+V both very long, respectively about 1.7 and 2.5 Χ width of head between antennal bases. ANT II similar in length to ANT I, much shorter than III

.….Rectinasus buxtoni

-      ANT V BASE and R IV+V of normal length , both about 0.5 Χ width of head between antennal bases. ANT II about twice as long as ANT I, similar in length to III

..…Smynthurodes betae

3      SIPH pale and attenuated distally, thinner than hind tibia at their respective midpoints, and 2.5-3.5 Χ cauda                                                                               …..Acyrthosiphon gossypii

-       SIPH pale or dark, thicker than hind tibia at their respective midpoints, and less than 2.5 Χ cauda                                                                                                                                 …..4

4      ANT 5-segmented, bearing long, fine hairs, many of them more than 2 Χ BD III. SIPH cylindrical for most of length but markedly constricted just proximal to flange

…..Rhopalosiphum rufiabdominale

-       ANT usually 6-segmented, with shorter hairs. SIPH without a marked subapical constriction

…..5

5    ANT PT/BASE less than 1. SIPH pale, 0.4-0.6 Χ cauda                …..Brachyunguis harmalae

-     ANT PT/BASE 1.4-6.2. SIPH pale or dark, 0.8-2.5 Χ cauda

…..go to key to polyphagous aphids

 

Gouania                                                       Rhamnaceae

      Gouania polygama                       Aphis gossypii

 

Gourliea                                                                 Leguminosae

        Gourliea decorticans = Geoffroea decorticans

 

Graffenrieda                                               Melastomataceae

      Graffenrieda rufescens                 Aphis spiraecola

 

Graphistemma                                             Apocynaceae

      Graphistemma pictum                  Aphis nerii

 

Gratiola                                                       Plantaginaceae

      Gratiola officinalis                        Aphis [chloris], gratiolae, nasturtii; Aulacorthum solani;

                                                              Brachycaudus helichrysi; Macrosiphum euphorbiae

Key to apterae on Gratiola:-

-      SIPH dark, about 1.2 Χ cauda, which bears 4-5 hairs. R IV+V c. 0.75 Χ HT II

…..Aphis gratiolae

-      Without this combination of characters                          …..go to key to polyphagous aphids

 

Gravesia                                                      Melastomataceae

      Gravesia sp.                                  Brachycaudus helichrysi

 

Greigia                                                        Bromeliaceae

      Greigia sp.                                     Aphis sp. – Leonard 1972a: 101

 

Grevillea                                                                 Proteaceae

      Grevillea robusta                          Aphis aurantii, gossypii; Myzus persicae

      G. thelemanniana                         Aphis gossypii

      Grevillea sp.                                  Aulacorthum solani

Use key to polyphagous aphids.

 

Grewia                                                                     Malvaceae

     Grewia biloba                                 Aphis gossypii

     G. mollis                                         Aphis gossypii

     G. occidentalis                                Aphis (Toxoptera) aurantii

     G. oppositifolia                               Sinomegoura citricola

     G. optiva                                         Sinomegoura citricola

     G. ovalis (?)                                     Aphis gossypii

     G. tiliifolia                                       Aphis aurantii, gossypii; Sinomegoura citricola                 

     Grewia sp. (?tomentosa)                Cervaphis schouteniae

Key to apterae on Grewia:-

-      Body with very long, branched hair-bearing marginal processes

.....Cervaphis schouteniae

-     Body without such processes                                  .....go to key to polyphagous aphids

 

Greyia                                                          Melianthaceae

      Greyia sutherlandii                       Aphis odinae; Aulacorthum solani;

                                                              Macrosiphum euphorbiae

Use key to polyphagous aphids.

 

Grindelia                                                     Compositae

      Grindelia chiloensis                      Aphis melosae; Myzus persicae; Uroleucon payuniense

        G. cuneifolia = G. hirsutula

        G. hirsutula                                   Brachycaudus helichrysi; [Illinoia grindeliae];

                                                              Uroleucon chani, richardsi, Uroleucon sp. (Oregon,

                                                                  BMNH collection)

        G. integrifolia                                Aulacorthum solani; Uroleucon erigeronense, penderum

        G. nana = G. hirsutula                    

        G. perennis = G. hirsutula

        G. squarrosa                                 [Anoecia corni], Atarsos grindeliae;

                                                              Illinoia grindeliae, grindeliae ssp. palmerae;

                                                              Uroleucon richardsi, Uroleucon sp.(Colorado, BMNH

                                                                  collection)

        G. stricta = G. hirsutula

        Grindelia sp.                                 [Protaphis middletonii]; [Uroleucon brevisiphon]

Key to apterae on Grindelia:-

1      Tarsi absent. ANT III-V with secondary rhinairia (sometimes III and IV are fused). ANT PT/BASE 1.0-1.4                                                                                   …..Atarsos grindeliae

-       Two-segmented tarsi present. Secondary rhinaria absent or on ANT III only. ANT PT/BASE 1.4-6.5                                                                                                                               …..2

2      ANT tubercles weakly developed or undeveloped. SIPH without subapical reticulation

                                                                                                                                                  …..3

-       ANT tubercles well developed. SIPH with or without subapical reticulation                  …..4

3      Cauda helmet-shaped, shorter than its basal width in dorsal view, with 4-7 hairs. SIPH pale, smooth, conical, with an annular subapical incision. Spiracular apertures rounded. Dorsum without dark markings or reticulate sculpturing. No marginal tubercles (MTu)

                                                                                                             …..Brachycaudus helichrysi

-       Cauda tongue-shaped, longer than its basal width, with 6-12 hairs. SIPH dark, coarsely imbricated, with no annular subapical incision. Spiracular apertures reniform. Dorsum with variably developed dark markings and reticulate sculpturing. Large MTu present on prothorax and ABD TERG 1 and 7                                                             …..Aphis melosae

4     SIPH without a distinct zone of reticulation, at most with subapical transverse striae and 1-2 rows of indistinct polygonal cells                                                                                      …..5

-      SIPH with a distinct distal zone of reticulation extending 0.2 or more of its length and with numerous polygonal cells                                                                                                  …..7

5     Head spiculose, with inner faces of ANT tubercles approximately parallel. SIPH tapering or cylindrical on distal half. ANT III with 0-3 (usually 1) rhinaria

…..Aulacorthum solani

-      Head smooth, with inner faces of ANT tubercles divergent. SIPH slightly swollen on distal half. ANT III with 2-5 rhinaria                                                                                         …..6

6     ANT PT/BASE 4.0-4.3. Cauda 1.5-1.8 Χ R IV+V, which is 1.25-1.5 Χ HT II

…..Illinoia grindeliae

-      ANT PT/BASE 4.5-4.9. Cauda 1.9-2.4 Χ R IV+V which is 1.1-1.2 Χ HT II

…..Illinoia grindeliae ssp. palmerae

7      SIPH entirely dark                                                                                    …..Uroleucon chani

-       SIPH pale, at least on basal part                                                                                        …..8

8      ANT III with 12-31 rhinaria extending to 0.80-0.98 from base, with the majority on distal half                                                                                                      …..Uroleucon richardsi

-       ANT III with 5-26 rhinaria extending to 0.4-0.8 from base, with the majority on basal half                                                                                                                                           …..9

9      R IV+V 0.9-1.2 Χ HT II, with 6-10 accessory hairs. SIPH 1.85-2.5 Χ cauda. ANT PT/BASE 3.2-5.7                                                                                                                             …..10

-       R IV+V 1.15-1.5 Χ HT II, with 7-13 accessory hairs. SIPH 1.5-2.6 Χ cauda. ANT PT/BASE 3.0-5.2                                                                                                                             …..11

10    Siphunculi pale at base, dark over most of length. Distal caudal hairs usually short and blunt or capitate. Dorsal cephalic hairs 18-35 μm long                              …..Uroleucon erigeronense

-       Siphunculi pale. Distal caudal hairs pointed. Dorsal cephalic hairs 45-55 μm long

…..Uroleucon payuniense

11  ANT PT/BASE 3.0-3.5. ANT PT 1.0-1.1 Χ cauda. R IV+V with 7-9 accessory hairs

                                                              ..…Uroleucon (Lambersius) sp. (on G. hirsutula, Oregon)

-     ANT PT/BASE 3.6-5.2. ANT PT 1.5-2.0 Χ cauda. R IV+V with 9-13 accessory hairs

…..12

12   SIPH 2.2-2.6 Χ cauda. R IV+V 1.15-1.3 Χ HT II. Tibiae dusky/dark for most of length

                                                         …..Uroleucon (Lambersius) sp. (on G. squarrosa, Colorado)

-      SIPH 1.65-1.95 Χ cauda. R IV+V 1.3-1.6 Χ HT II. Tibiae pale except at apices

…..Uroleucon penderum

 

Grisebachianthus                                        Compositae

       Grisebachianthus libanotica         Aphis aurantii, gossypii, spiraecola;

                                                              Neomyzus circumflexus

Use key to polyphagous aphids.

 

Gronophyllum  see Hydriastele                                    Arecaceae

 

Grossularia   see  Ribes                                         Grossulariaceae

 

Guaiacum                          Lignum vitae                   Zygophyllaceae

      No aphids recorded

Guapira                                                                                    Nyctaginaceae

      Guapira fragrans                           Aphis (Toxoptera) aurantii

 

Guazuma                                                                                 Malvaceae

       Guazuma tomentosa = G. ulmifolia

       G. ulmifolia                                   Aphis aurantii, gossypii; Cervaphis schouteniae

See couplet under Grewia.
 

Guettarda                                                                               Rubiaceae

        Guettarda krugii                           Aphis spiraecola

        G. scabra                                       Aphis gossypii

Use key to polyphagous aphids      

 

Guiera                                                         Combretaceae

        Guiera senegalensis                      Aphis gossypii

 

Guizotia                                                       Compositae

      Guizotia abyssinica                       Aphis craccivora, fabae; Macrosiphum euphorbiae;

                                                              [Melanaphis sp.]; [Rhopalosiphum maidis];

                                                              Uroleucon compositae (as jaceae)

        G. aethiopica (?)                           Aphis gossypii, spiraecola

Use key to polyphagous aphids.