HOST LISTS AND KEYS FOR EACH PLANT GENUS

(in alphabetical order)

 

 

 

 

Cab-Car

 

Cabomba

Cacalia

Cachrys

Cactus

Caesalpinia

Cajanus

Cakile

Caladium

Calalia

Calamagrostis

Calamintha

Calamistrum

Calamus

Calandrinia

Calanthe

Calathea

Calceolaria

Calendula

Calicotome

Calla

Callerya

Calliandra

Callicarpa

Calliergon

Calliergonella

Calligonum

Callionia

Calliopsis

Callisia

Callistemon

Callistephus

Callitriche

Callitris

Calluna

Calocedrus

Calodendron

Calonyction

Calophaca

Calophyllum

Calopogonium

Calothamnus

Calotropis

Caltha

Calycanthus

Calycophyllum

Calycotome

Calylophus

Calyptranthe

Calyptranthes

Calystegia

Calytrix

Camassia

Camelina

Camellia

Campanula

Campanumoea

Camphorosma

Campsis

Campyloneurum

Canadanthus

Cananga

Canarium

Canavalia

Cancrinia

Canna

Cannabis

Capillipedium

Capnoides

Capparis

Capraria

Capriola

Capsella

Capsicum

Caragana

Caraxylon

Cardamine

Cardaminopsis

Cardaria

Cardiocrinum

Cardiospermum

Carduus

Carex

Carica

Carissa

Carlina

Carludovica

Carmichaelia

Carmona

Caroxylon

Carpesium

Carpinus

Carpobrotus

Carrichtera

Carthamus

Carum

Carya

Caryocar

Caryophyllus

Caryopteris

 

 

Cabomba                                                      Cabombaceae

       Cabomba caroliniana              Rhopalosiphum nymphaeae

 

Cacalia                                                                    Compositae

[The European spp. formerly placed in Cacalia are now in Adenostyles, the African spp in Crassocephalum, the eastern asiatic spp. in Parasenecio, the central American spp. in Psacalium, and the North American spp. mostly in Arnoglossum and Hasteola.]

       Cacalia atriplicifolia = Arnoglossum atriplicifolium

       C. auriculata = Parasenecio auriculatus                                     

       C. delphiniifolia = Parasenecio delphiniifolia

       C. hastata = Parasenecio hastatus

       C. hirsuta = Adenostyles alliariae

       C. sonchifolia =  Emilia sonchifolia

       C. suaveolens = Hasteola suaveolens

       C. tuberosa = Arnoglossum plantagineum

 

Cachrys  (including Hippomarathrum)                                   Apiaceae

      Cachrys crispum                      Anuraphis pyrilaseri; Aphis umbelliferarum

       C. ferulacea (?)                        Anuraphis pyrilaseri

       C. libanotis                               Anuraphis cachryos; [Dysaphis crataegi]

       C. pabularia see Prangos pabularia                                           

       C. sicula                                   Anuraphis cachryos

Key to aphids on Cachrys:-

(N.B. all 3 species in the key have a short cauda, and marginal tubercles on most abdominal segments.)

1     SIPH rudimentary, hardly thicker than ANT III, about 0.5 Χ the triangular cauda, which bears 6-7 short hairs near the apex                                                      .….Aphis umbelliferarum

-      SIPH conical, broad-based, bearing close-set rows of minute spinules, 1.4-2.5 Χ cauda which is rounded at apex and bears 7-12 long hairs                                                                      ..…2

2     Marginal tubercles (MTu) usually present on all of ABD TERG 1-7. SIPH are 0.12-0.19 mm long, 1.4-1.9 Χ cauda                                                                              .....Anuraphis cachryos

-      MTu on ABD TERG 1-5 only, absent from ABD TERG 6-7. SIPH are 0.18-0.28 mm long, 1.8-2.5 Χ cauda                                                                                     …..Anuraphis pyrilaseri

 

“Cactus”   (see Mamillaria, Melocactus, Opuntia)            Cactaceae

       “Cactus” spp.                          Aphis gossypii; Myzus persicae; Smynthurodes betae

Use key to polyphagous aphids.

 

Caesalpinia                                                           Leguminosae

       Caesalpinia angulata               [Acyrthosiphon kondoi]; Aphis spiraecola

       C. coriaria                                Aphis (Toxoptera) aurantii

       C. decapetala                            Aphis gossypii

       C. gilliesii                                  Aphis craccivora

       C. pulcherrima                                 Aphis craccivora, gossypii; Macrosiphum euphorbiae

       C. sepiaria = C. decapetala

       Caesalpinia spp.                      Myzus persicae; [Sitobion aulacorthoides]

Use key to polyphagous aphids.

 

Cajanus  (see also Atylosia)                                          Leguminosae

      Cajanus cajan (incl. indicus)   [Acyrthosiphon caraganae];

                                                         Aphis craccivora, fabae, glycines, gossypii, spiraecola;

                                                         Brachycaudus [cardui], helichrysi;

                                                         Cervaphis rappardi, rappardi ssp. indica;

                                                         [Uroleucon compositae (as Macrosiphum neavei

                                                             Theobald, a nomen dubium)];

                                                         Megoura lespedezae; Myzus persicae;

                                                         Sitobion nigrinectarium

Key to aphids on Cajanus:-

(This is a revised version of the key to aphids on pigeon pea in Blackman & Eastop (2000), incorporating two more species.)

1     Body with large, branched marginal hair-bearing processes                .….Cervaphis rappardi 

-      Body without large branched marginal processes                                                             …..2

2    Cauda helmet-shaped, a little shorter than its basal width. Spiracular apertures rounded

                                                                                        …..Brachycaudus helichrysi

-      Cauda tongue-shaped, clearly longer than its basal width. Spiraclular apertures reniform

                                                                                                                      .….3

3     SIPH pale, slightly clavate, about 2 Χ cauda.  ANT well developed with inner faces convergent, scabrous                                                                                   …..Myzus persicae

-      SIPH dark. ANT tubercles weakly developed, or with smooth, divergent inner faces    …..4

4     Cauda as dark as SIPH                                                                                                     ..…5

-      Cauda paler than SIPH                                                                                                     ..…7

5     Dorsal abdomen usually with an extensive solid black shield. Cauda with 4-7 hairs

                                                                                                                         ..…Aphis craccivora

-      Dorsal abdomen without extensive dark markings anterior to SIPH. Cauda with 7-25 hairs

                                                                                                                                                  ..…6

6     Dorsal abdomen without any dark markings. Cauda usually with a midway constriction, and bearing 7-15 hairs                                                                     .....Aphis spiraecola

-      Dorsal abdomen with dark bands on ABD TERG 8, or 7 and 8, and often with dark markings anterior to SIPH. Cauda without a constriction, and bearing 11-25 hairs

                                                                                                                                 …..Aphis fabae

7     ANT tubercles weakly developed, not projecting beyond middle part of head in dorsal view. ABD TERG 1 and 7 with marginal tubercles (MTu)                                                        .….8

-      ANT tubercles projecting beyond middle part of front of head in dorsal view. ABD TERG 1 and 7 without MTu                                                                                                            .....9

8     Cauda 0.08-0.125 Χ BL (only more than 0.12 Χ BL in very small specimens with BL less than 1 mm); pale to dusky, without a constriction, less than 3 Χ longer than its width at midlength, and bearing 2-7 (usually 5-6) hairs                                    …..Aphis gossypii

-      Cauda 0.125-0.16 Χ BL, very pale, usually with a slight mid-way constriction, more than 3 Χ longer than its narrowest width at midlength, and bearing 6-9 (usually 8) hairs                 

                                                                                                    ..…Aphis glycines

9     SIPH tapering, more than 1.5 Χ cauda, with polygonal reticulation on distal 0.12-0.25 of length                                                                                             .….Sitobion nigrinectarium

-      SIPH slightly swollen, less than 1.5 Χ cauda, without any polygonal reticulation

                                                                                                                   ..…Megoura lespedezae

 

Cakile                                                           Brassicaceae

      Cakile edentula var. islandica    Acyrthosiphon auctum

       C. maritima (incl. ssp. euxina)        Acyrthosiphon auctum; Aphis fabae;

                                                            Brevicoryne brassicae; Lipaphis erysimi;

                                                            [Cavariella theobaldi]; [Hyadaphis foeniculi];

                                                            Myzus persicae, [varians]

Key to aphids on Cakile:-

1     ANT III 2.5-3.7 Χ SIPH. Cauda short, broad-based, triangular      .….Brevicoryne brassicae

-      ANT III less than 2 Χ SIPH. Cauda tongue-shaped                                                         .….2

2     SIPH cylindrical or slightly tapering, 0.85-1.33 Χ cauda. SIPH and cauda both pale, concolorous with body. ANT III with 1-3 small rhinaria near base                                         

                                                                                                                …..Acyrthosiphon auctum

-      SIPH tapering or slightly swollen on distal half; if less than 1.33 Χ cauda then both SIPH and cauda are dusky or dark. ANT III without any rhinaria                                            .….3

3     SIPH black and tapering from base to flange. Marginal tubercles (MTu) present on ABD TERG 1 and 7                                                                                        .….Aphis fabae group

-      SIPH dusky/dark or pale with slight to moderate swelling. No MTu on ABD TERG 1 and 7                                                                                                               …..4

4     ANT tubercles well developed, scabrous, with convergent inner faces. SIPH pale, 1.9-2.5 Χ cauda                                                                                                           .….Myzus persicae

-      ANT tubercles weakly developed. SIPH usually dusky or dark, 1.3-1.6 Χ cauda

                                                                                                 .….Lipaphis erysimi

 

Caladium                                                     Araceae

      Caladium bicolor                     Aphis gossypii;  Melanaphis sacchari;

                                                         Pentalonia caladii

       C. colocasia =Colocasia esculenta                                              

       Caladium spp.                         Aphis (Toxoptera) aurantii

Key to aphids on Caladium:-

1     ANT tubercles well developed, spiculose, pointed. Femora with basal 0.6 or more pale, contrasting with black distal section. SIPH pale basally and dark distally, and slightly swollen subapically. (Al. with broad-banded wing veins, and radius fused with media to form a closed cell below pterostigma)                                         .….Pentalonia caladii

-      ANT tubercles weakly developed, without spicules. Femora either mainly dark or mainly pale. SIPH dark, tapering, without any subapical swelling. Al. with normal, pale wing venation                                                                                                                             ..…2

2     Cauda pale or dusky with 4-8 hairs. ANT PT/BASE 2.1-3.2                      ..…Aphis gossypii

-      Cauda dark with 9-26 hairs. ANT PT/BASE 3.2-5.0                                                        .....3

3     R IV+V 1.3-1.6. SIPH 0.9-1.5 Χ cauda. Stridulatory apparatus present

.…. Aphis (Toxoptera) aurantii

-      R IV+V 0.9-1.1 Χ HT II. SIPH 0.7-0.95 Χ cauda. No stridulatory apparatus

.....Melanaphis sacchari

 

Calalia    see Cacalia                                                          Compositae

 

Calamagrostis                                              Poaceae

       Calamagrostis Χ acutiflora      Laingia psammae              

       C. arenaria = Ammophila arenaria

       C. argentea = Stipa calamagrostis

       C. arundinacea                        Anoecia major; Chaetosiphella stipae ssp. setosa;

                                                         Forda marginata; Laingia psammae;

                                                         [Pemphigus gramineus Shinji];

                                                         Schizaphis graminum,  jaroslavi, longicaudata;

                                                         Sitobion avenae, fragariae; [Watabura nishiyae]

       C. canescens                            Anoecia corni; Diuraphis calamagrostis; Forda formicaria;

                                                         Rhopalosiphum padi; Schizaphis dubia, graminum;

                                                         Sitobion fragariae

       C. epigeios                                Anoecia corni, furcata, major, vagans;

                                                         Atheroides serrulatus; Diuraphis calamagrostis;

                                                         Forda formicaria; Geoica utricularia; Hyalopterus pruni;

                                                         Laingia psammae; Metopolophium dirhodum;

                                                         Paracletus bykovi, cimiciformis;

                                                         Rhopalosiphum padi; Schizaphis graminum, jaroslavi ;

                                                         Sipha glyceriae, littoralis, maydis;

                                                         Sitobion africanum, avenae, fragariae, graminearum;

                                                         Tetraneura africana, ulmi

       C. lanceolata = C. canescens      

       C. langsdorfii = C. purpurea

       C. littorea = C. pseudophragmites

       C. neglecta = C. stricta

       C. pilosula                                Tetraneura indica

       C. pseudophragmites               Hyalopterus pruni; Laingia psammae; Sipha maydis;

                                                         Sitobion avenae

       C. purpurea                              Diuraphis calamagrostis; Metopolophium dirhodum;

                                                         Schizaphis nigerrima, thunebergi; Sitobion avenae

       C. stricta                                   Diuraphis calamagrostis; Laingia psammae;

                                                         Rhopalosiphum padi; Schizaphis nigerrima; Sitobion avenae

       C. villosa                                   Laingia psammae; Sitobion avenae

       Calamagrostis spp.                  Schizaphis cuprea; Sitobion beiquei

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

 

Calamintha                                                  Lamiaceae

       Calamintha acinos  = Clinopodium  acinos

       C. alpina = Clinopodium alpinum

       C. clinopodium  = Clinopodium vulgare

       C. grandiflora = Clinopodium grandiflorum

       C. nepeta = Clinopodium nepeta

       C. officinalis = Clinopodium nepeta ssp. glandulosum

       C. sylvatica = Clinopodium menthifolium

       C. umbrosa  = Clinopodium umbrosum

       Calamintha spp.                      [Aphis nepetae]; Eucarazzia elegans;

                (= Clinopodium spp.?)             Ovatomyzus chamaedrys

See key under Clinopodium

 

Calamistrum                                                Marsileaceae

      Calamistrum globuliferum        Neomyzus circumflexus

 

 

Calamus                                                       Arecaceae

       Calamus quinquesetinervius    Cerataphis jamuritsu

       C. rotang                                  Cerataphis brasiliensis, lataniae

       C. unifarius                              Astegopteryx nipae

Key to apterae on Calamus and other aphids on palms (Arecaceae):-

1     SIPH present as shallow cones or pores                                                                            …..2

-      Siphunculi tubular                                                                                                             …..9

2     Head without frontal horns                                                      …..Tuberaphis xinglongensis*

-      Head with frontal horns                                                                                                    …..3

3     Body dorsoventrally flattened, almost circular, wholly sclerotic with a distinct crenulate marging due to a continuous ring of wax glands (e.g. Fig. 43a)                                        .....4

-      Body elongate oval, not dorsoventrally flattened, not wholly sclerotic and without a continuous crenulate margin, but usually with well-developed marginal elongate oval wax glands, arranged in groups segmentally with long axes parallel                                         .....7

4     Frontal horns clearly longer than ANT III                                        .....Cerataphis jamuritsu*

-      Frontal horns shorter than ANT III                                                                                   ......5

5     Frontal horns finger-like, rounded apically, very close together (Fig. 43d)

                                                                                                                …..Cerataphis formosana

-      Frontal horns pointed, and well separated (Fig. 43e)                                                        …..6 

6     Underside of  head with at least one pair of thick, dagger-like hairs situated lateroventral to bases of frontal horns (Fig. 43b). Cauda with 4-8 mainly long hairs

                                                                                                                .....Cerataphis brasiliensis

-      Underside of head with only fine hairs (Fig. 43c). Cauda with 8-16 hairs of various sizes

                                                                                              .....Cerataphis lataniae

7     Dorsal abdomen with segmental markings consisting of broad transverse bars, sometimes broken into paired, dark patches. Large marginal abdominal wax glands, segmentally arranged in often rather irregular groups (e.g. Fig.43f)                    ….Astegopteryx rappardi

-      Dorsal abdomen without segmental markings, wholly dusky. Wax glands either absent from segments anterior to SIPH or all grouped in short rows with long axes parallel (Fig. 43g-j)

.….8

8     Groups of marginal wax glands usually well developed on all abdominal segments (Fig. 43h). ANT III 1.0-1.5 Χ ANT IV (when ANT is 5-segmented)           …..Astegopteryx nipae

-      Marginal wax glands reduced or absent on abdominal segments anterior to SIPH (Figs 43i-j). ANT III 1.5-2.0 Χ ANT IV (when ANT is 5-segmented)                …..Astegopteryx rhapidis

9     Cauda long and very pale, with only 4 hairs. SIPH slightly swollen on basal half (calf-shaped). ANT PT/BASE 5.0-6.3. (Hind wing of al. with only one oblique vein)                                                                                      .....Hysteroneura setariae

-      Cauda pale, dusky or dark with 4-28 hairs. SIPH cylindrical or tapering, not at all swollen on basal half. ANT PT/BASE 1.7-6.0. (Hind wing of al. with 2 oblique veins)                   .....10

10   SIPH 2.1-3.0 Χ cauda. ANT entirely dark except for base of III. (Forewing of al. with

       once-branched media)                                                                  .....Schizaphis rotundiventris

-      SIPH 0.8-2.2 (-2.5) Χ cauda. ANT pale at least on most of III and IV. (Forewing of al. with media once- or twice-branched)                                      ..... go to key to polyphagous aphids

 

 

Calandrinia  (including Cosmia)                                 Portulacaceae

      Calandrina parviflora              Aphis spiraecola

      Calandrinia sp.                        Aphis fabae, gossypii

Use key to polyphagous aphids.

 

Calanthe                                                      Orchidaceae

      Calanthe corymbosa = C. sylvatica

       C. discolor                                Hydronaphis calanthes

       C. masuca = C. sylvatica            

      C. sylvatica                               Myzus persicae; Cerataphis orchidearum;

                                                         Sitobion indicum, luteum                                             

       C. volkensii = C. sylvatica

       Calanthe sp.                             Aphis gossypii

Key to apterae on Calanthe:-

-      Dorsal body hairs long, 2.5-3.7 Χ BD III, arising from tuberculate bases. Longest hairs on ANT III about 1.9 Χ BD III. Cauda pale, helmet-shaped, a little shorter than its basal width                                                                                                          .….Hydronaphis calanthes

-      Dorsal hairs and those on ANT III all shorter than BD III. Cauda tongue-shaped (or knobbed)                                         …..use key to other aphids on orchids under Cymbidium

 

Calathea                                                      Marantaceae

      Calathea crotalifera                 Pentalonia nigronervosa

 

Calceolaria                                                  Calceolariaceae

      Calceolaria chelidonioides       Aphis spiraecola; Brachycaudus helichrysi

      C. corymbosa                           Neomyzus circumflexus

       C. crenatiflora                          Myzus persicae

       C. esculenta                              Aphis gossypii

       C. europaeum                          Myzus persicae; Neomyzus circumflexus

       C. mexicana                             Aphis gossypii

       C. Χ speciosa                            Aulacorthum solani

       Calceolaria spp.                       Acyrthosiphon malvae group; Macrosiphum euphorbiae;

                                                         Myzus ornatus

Use key to polyphagous aphids.

 

Calendula                                                    Compositae

      Calendula aegyptiaca = C. arvensis

       C. algeriensis = C. stellata

       C. arvensis                                Aphis craccivora, fabae, gossypii, solanella, spiraecola;

                                                         Aulacorthum solani; Brachycaudus cardui, helichrysi;

                                                         Macrosiphum euphorbiae; Myzus persicae;

                                                         Protaphis terricola;

                                                         Uroleucon calendulae, chrysanthmi, [nigrotuberculatum]

       C. micrantha = C. arvensis

       C. officinalis                             Aphis fabae, gossypii, solanella;

                                                         Brachycaudus cardui, helichrysi;

                                                         Capitophorus archangelskii;

                                                         [Dysaphis tulipae]; Macrosiphum euphorbiae;

                                                         Myzus persicae; Neomyzus circumflexus;

                                                         Neotoxoptera oliveri; Rhopalosiphum rufiabdominale;

                                                         Uroleucon ambrosiae, compositae,

                                                             Uroleucon sp. (California, Mexico; BMNH collection)

       C. sicula = C. stellata

       C. stellata                                  Aphis fabae; Brachycaudus helichrysi                                    

       Calendula sp.                           [Lipaphis erysimi]; [Uroleucon kashmiricum]

Key to apterae on Calendula:-

1     Dorsal hairs long and capitate, arising from tuberculate bases; those on front of head more than 3 Χ BD III. SIPH long and thin, often very slightly swollen at apices, more than 3 Χ cauda                                                                                       ..…Capitophorus archangelskii

-      Dorsal body hairs not capitate, without tuberculate bases. SIPH less than 3 Χ cauda     ..…2

2     ANT PT/BASE 0.7-1.4                                                                         …..Protaphis terricola

-      ANT PT/BASE more than 2                                                                                             …..3

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

-      Cauda tongue-or finger-shaped, clearly longer than its basal width.  Spiracular apertures small and reniform                                                                                                             …..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     SIPH with a subapical zone of polygonal reticulation                                                      …..6

-      SIPH without polygonal reticulation                                   .….go to polyphagous aphids key

6     Cauda and SIPH both dark. ANT III with 25-86 rhinaria             ..…Uroleucon compositae

-      Cauda pale or dusky, SIPH pale or dark. ANT III with 1-35 rhinaria                             ..…7

7     SIPH pale with polygonal reticulation on distal 0.12-0.17 of length. ANT III with 1-10 rhinaria                                                                                        ..…Macrosiphum euphorbiae

-      SIPH dusky or dark with poygonal reticulation on distal 0.3 or more of length. ANT III with 7-35 rhinaria                                                                                                                      ..…8

8     ANT III with about 10 rhinaria forming a single row over entire length. SIPH about 2 Χ cauda                                                                                              …..Uroleucon calendulae*

-      ANT III with 7-35 rhinaria, not arranged in a row, usually restricted to basal part of segment. SIPH 1.0-1.5 Χ cauda                                                                                        …..9

9     R IV+V 0.15-0.16 mm, 0.9-1.0 Χ HT II                                      …..Uroleucon chrysanthemi

-      R IV+V 0.16-0.24 mm, 1.1-1.85 Χ HT II                                                                       …..10

10   R IV+V 0.16-0.22 mm, 1.1-1.33 Χ HT II and bearing less than 10 accessory hairs

                                                                                                                 ..…Uroleucon ambrosiae

-      R IV+V 0.22-0.24 mm, 1.5-1.85 Χ HT II, and bearing more than 20 accessory hairs

…..Uroleucon sp., California and Mexico (BMNH collection)

 

Calicotome   (including Calycotome)                                  Leguminosae

       Calicotome spinosa                  Acyrthosiphon pisum; Aphis craccivora, pseudocytisorum;

                                                         Ctenocallis israelica; Myzus persicae

       C. villosa                                   Aphis craccivora, cytisorum, spiraecola;

                                                         Ctenocallis israelica

Key to apterae on Calicotome:-

1     Body with long finger-like marginal processes. Cauda knobbed, anal plate bilobed. Dorsum with extensive, paired dark sclerites leaving a clear spinal stripe       …..Ctenocallis israelica

-      Body without long marginal processes. Cauda not knobbed, anal plate entire. Dorsum either with a solid dark shield or without any dark markings                                                     …..2

2     Dorsum pale. Femora with fine hairs about as long as trochantro-femoral suture. Cauda with a midway constriction, rounded at apex, and bearing 6-12 hairs             …..Aphis spiraecola

-      Dorsum with a dark shield (fragmented at high temperatures). Femoral hairs about 0.5 Χ  length of trochantro-femoral suture. Cauda not constricted and with rather pointed apex, and bearing 4-9 hairs                                                                                                         …..3

3     SIPH 0.9-1.2 (-1.3) Χ cauda. R IV+V 1.0-1.15 Χ HT II. Dorsal pigmentation often reduced to small scattered sclerites                                                              …..Aphis pseudocytisorum

-      SIPH 1.2-2.2 Χ cauda (rarely less than 1.3). R IV+V 0.9-1.3 Χ HT II. Dorsal abdomen usually with a dark shield, rarely with scattered small sclerites except in summer dwarfs

                                                                                                                                                  …..4

4     R IV+V 0.88-1.16 Χ HT II (mostly 0.9-1.05 X). 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 X). Anterior half of genital plate with 2-8 hairs (mode 4, mean 5.2)                                                                                   …..Aphis cytisorum

 

Calla                                                            Araceae

      Calla palustris                          Aphis nasturtii; Myzus persicae; Rhopalosiphum nymphaeae

       Calla sp.                                   Acyrthosiphon malvae; Aulacorthum solani;

                                                         Neomyzus circumflexus

Key to apterae on Calla:-

-      SIPH clavate. ANT tubercles weakly developed, not projecting beyond middle of front of head in dorsal view. Dorsal cuticle with reticulate ornamentation formed by minute spinules arranged in polygons                                                               ..…Rhopalosiphum nymphaeae

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

 

Callerya                                                       Leguminosae

      Callerya reticulata                          Aulacophoroides formosana

 

Calliandra                                                    Leguminosae

      Calliandra eriophylla               Aphis sp. (Leonard 1972a: 98)

       C. guildingii                             Aphis (Toxoptera) aurantii

       C. haematocephala                  Aphis aurantii, gossypii, Aphis sp. (Leonard 1972a: 98);

                                                         Myzus persicae

       C. inaequilatera = C. haematocephala

       C. surinamensis                       Aphis craccivora

       C. tweedii                                  Myzus persicae

Use key to polyphagous aphids.

 

Callicarpa                                                    Lamiaceae

      Callicarpa bodinieri                 Aphis fabae

       C. dichotoma                            Aphis gossypii

      C. formosana                           Aphis gossypii

       C. japonica                               Aphis gossypii

       C. longifolia                             Myzus persicae

       C. macrophylla                        Aphis gossypii, raji; Subovatomyzus leucosceptri

       C. mollis                                   Aphis gossypii

       C. purpurea = C. dichotoma

Key to aphids on Callicarpa:-

1     SIPH smooth-surfaced, clavate, about 3 Χ cauda. Hairs on ANT III short with capitate apices; the longest of them less than 0.5 Χ BD III. R IV+V 1.8-2.1 Χ HT II                                                                              ..…Subovatomyzus leucosceptri

-      Without this combination of characters                                                                            …..2

2     R IV+V 0.19-0.23 mm, 2.0-2.2 Χ HT II. Marginal abdominal hairs 78-103 μm long, 3-4 Χ ANT BD III. Marginal tubercles (MTu) present on ABD TERG 1 but often absent from ABD TERG 7                                                                                                      …..Aphis raji

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

 

Calliergon                                                    Amblystegiaceae

      Calliergon cordifolium            Pseudacaudella rubida

      C. stramineum                        Myzodium mimulicola

Use key to aphids on mosses under Polytrichum.

 

Calliergonella                                              Amblystegaceae

      Calliergonella cuspidata               [Jacksonia papillata];

                                                            Muscaphis cuspidata, escherichi, musci;

                                                            Pseudacaudella rubida

Use key to apterae of moss-feeding aphids under Polytrichum.

 

Calligonum                                                  Polygonaceae

       Calligonum aphyllum              Brachyunguis harmalae

       C. arborescens                         Brachyunguis harmalae

       C. caput-medusea                    Brachyunguis harmalae

       C. comosum                             Aphis sp. (Israel, BMNH collection);

                                                         Brachyunguis  harmalae

       C. eriopodum                           Aphis craccivora; Brachyunguis calligoni, harmalae

       C. flavidum                              Brachyunguis calligoni

       C. leucocladum                        Brachyunguis harmalae

       C. microcarpum                       Brachyunguis calligoni

       C. mongolicum                        Brachyunguis harmalae

       C. pallasia = C. aphyllum

          C. rubicundum                                Brachyunguis calligoni, harmalae                                                        

       C. setosum                                Brachyunguis calligoni, harmalae

Key to apterae on Calligonum:-

1     ANT PT/BASE less than 1. SIPH about as long as their basal widths, 0.2-0.6 Χ cauda   .....2

-      ANT PT/BASE more than 1. SIPH much longer than their basal widths, and longer than cauda                                                                                                                                 …..3

2     SIPH very small, c. 0.03 mm long and 0.03 mm wide at base, and only c. 0.20-0.25 Χ cauda

                                                                                                                .....Brachyunguis calligoni

-      SIPH 0.06-0.08 mm long and 0.06-0.08 mm wide at base, 0.4-0.7 Χ cauda                                                                                                                                    …..Brachyunguis harmalae

3     Dorsum with a dark shield (often fragmented in hot climates). Cauda and SIPH both black

                                                                                                                         …..Aphis craccivora

-      Dorsum without dark markings. Cauda paler than SIPH

…..Aphis sp. (Israel, BMNH collection)

 

Callionia  see  Potentilla                                         Rosaceae

 

Calliopsis see Coreopsis                                  Compositae

      Calliopsis tinctoria = Coreopsis tinctoria                                    

 

Callisia                                                         Commelinaceae

      Callisia fragrans                         [Rhopalosiphum maidis]; Uroleucon ambrosiae

      C. monandra                              Utamphorophora commelinensis

See key to apterae on Commelina.

 

Callistemon                                                  Myrtaceae

      Callistemon brachyandrus         Myzus persicae

       C. citrinus                                   Aphis aurantii, gossypii; Sitobion halli

       C. lanceolatus                             Aphis aurantii, gossypii

       C. linearis                                    Aphis (Toxoptera) aurantii; [Aulacorthum rhamni];

                                                           [Greenidea anonae]            

       C. pachyphyllus                          Aphis gossypii; Aulacorthum solani; Myzus persicae

       C. pallidus                                   Aulacorthum solani

       C. phoeniceus                             Aphis gossypii

       C. pinifolius                                Myzus persicae

       C. salignus                                  Myzus persicae

       C. speciosus                                Aphis (Toxoptera) aurantii

      Callistemon sp.                           [Greenidea psidii]

Key to apterae on Callistemon:-

-      SIPH dark at least distally, with polygonal reticulation on subapical 0.1-0.2 of length. ANT dark at least distally, with hairs on ANT III less than 0.25 Χ BD III, and ANT PT/BASE

       5.0-6.8                                                                                                            .….Sitobion halli

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

 

Callistephus                 China Aster            Compositae

      Callistephus chinensis                Aphis fabae, gossypii, nasturtii, spiraecola;

                                                            Aulacorthum solani; Brachycaudus helichrysi;

                                                            [Capitophorus hippophaes]; Macrosiphum euphorbiae;

                                                            Myzus ornatus, persicae; Pemphigus bursarius;

                                                             Protaphis middletonii; [Uroleucon nigrotuberculatum]

       C. hortensis  = C. chinensis

       Callistephus sp.                           Neomyzus circumflexus

Use key to polyphagous aphids.

 

Callitriche                     Water Starwort             Plantaginaceae

      Callitriche hermaphroditica       Rhopalosiphum nymphaeae

                   (incl. autumnalis)

      C. palustris                                  Rhopalosiphum nymphaeae

      C. stagnalis                                 Myzodium knowltoni; Rhopalosiphum nymphaeae

       C. verna = C. palustris

Couplet for separating these two species:-

-      Head coarsely nodulose. SIPH tapering from base to a well-developed flange                 

                                                                                            …..Myzodium knowltoni

-      Head smooth. SIPH somewhat swollen on distal half, narrower basad and distad of swelling

                                                                                                       ….. Rhopalosiphum nymphaeae

 

Callitris                                                                                   Cupressaceae

       Callitris spp.                             [Aphis gossypii];

                                                         Cinara (Cupressobium) cupressi, tujafilina;

                                                         Illinoia morrisoni

(Use key to aphids on Cupressus)
 

Calluna                                                        Ericaceae

      Calluna vulgaris                      Aphis callunae; [Brachycaudus cardui];

                                                         Ericaphis ericae, latifrons; [Rhopalosiphum maidis]

Key to apterae on Calluna:-

1     SIPH and cauda dark, with SIPH 0.6-0.8 Χ cauda. Dorsal cuticle with a strong pattern of reticulation                                                                                                   …..Aphis callunae

-      SIPH and cauda pale, with SIPH 1.4-2.0 Χ cauda. Dorsal cuticle wrinkled or almost smooth, without reticulation                                                                                                           …..2

2.    R IV+V 1.3-1.7 Χ HT II. First tarsal segments with 5-5-5 hairs               …..Ericaphis ericae

-      R IV+V 0.8-1.2 Χ HT II. First tarsal segments with 3-3-3 hairs           …..Ericaphis latifrons

 

 Calocedrus                                                                           Cupressaceae

       Calocedrus decurrens                 Cinara tujafilina; Illinoia morrisoni

(Use key to aphids on Cupressus)
 

Calodendron                                                                       Rutaceae

       Calodendron capense                            Cape Chestnut
                                                    Aphis (Toxoptera) aurantii, citricidus

(Use key to polyphagous aphids)

Calonyction    see  Ipomoea                                           Convolvulaceae

 

Calophaca                                                    Leguminosae

      Calophaca howenii = C. soongorica

      C. soongorica                              Aphis craccivora

      C. wolgarica                                Aphis craccivora

 

Calophyllum                                         Calophyllaceae

     Calophyllum antillanum           Aphis aurantii, craccivora, spiraecola

     C. brasiliense var. antillanum = C. antillanum

     C. inophyllum                        Aphis gossypii, spiraecola

 

(Use key to polyphagous aphids)

 

Calopogonium                                             Leguminosae

      Calopogonium caeruleum         Aphis gossypii

 

Calothamnus                                               Myrtaceae

      Calothamnus chrysanthereus    Myzus persicae

       C. quadrifidus                             Myzus persicae

       C. validus                                    Myzus persicae

 

 

Calotropis                                                                              Asclepiadaceae

      Calotropis gigantea                    Aphis asclepiadis, gossypii, nerii;

                                                            Brachyunguis calotropicus

      C. procera                            Aphis craccivora, gossypii, nerii;

                                                           Brachyunguis calotropicus, harmalae, [ushari];
                                                    Myzus persicae

Key to aphids on Calotropis:-

1      Antennal tubercles well-developed, convergent in dorsal view (fig. 42I). SIPH tubular, slightly swollen on distal half                                                                      .....Myzus persicae

-      Antennal tubercles weakly developed. SIPH tapering or conical                                     .....2

2      ANT PT/BASE a little less than 1. SIPH pale, truncated cones, much shorter than cauda

                                                                                                                                                    .....3

-      ANT PT/BASE much more than 1. SIPH dark, longer than cauda

                                                             ..... go to key to aphids on Apocynum, starting at couplet 8

 

3      SIPH 0.04-0.06 mm long, 0.33-0.40 Χ cauda                           ..... Brachyunguis calotropicus

-      SIPH 0.06-0.08 mm long, about 0.5-0.6 Χ cauda                           .....Brachyunguis harmalae

 

 

Caltha                                                          Ranunculaceae

      Caltha palustris                           Aphis nasturtii, rukavishnikovi; Aulaorthum solani;

                                                            [Brachycaudus cardui]; Macrosiphum euphorbiae;

                                                            Myzus ascalonicus, persicae; Rhopalosiphoninus calthae;

                                                            Rhopalosiphum nymphaeae; Thecabius affinis

       C. polypetala = C. palustris

       C. silvestris = C. palustris

          Caltha sp.                                    Brachycaudus helichrysi

Key to aphids on Caltha:-

1      ANT PT/BASE less than 0.5. Eyes of only 3-facets. SIPH absent. Dorsal wax gland plates (Fig.45a) present on all segments, with 6 on each of meso- and metanotum and ABD TERG 1-7                                                                                                             …..Thecabius affinis

-       ANT PT/BASE more than 1.5. Eyes multifaceted. SIPH tubular. No discrete wax glands

…..2

2     SIPH strongly swollen, black, 3.5-4.6 Χ cauda. Dorsum with an almost complete black sclerotic shield                                                                         ..… Rhopalosiphoninus calthae

-      SIPH not strongly swollen, pale or dark, less than 3 Χ cauda. Dorsum without a sclerotic shield                                                                                                                                 …..3

3     SIPH weakly swollen and dark, as is cauda. Dorsal cuticle with a pattern of spicules arranged in polygons                                                               …..Rhopalosiphum nymphaeae

-      SIPH tapering, cylindrical or swollen, but if swollen then SIPH and cauda both pale  …..43

4     BL 3.5-4.0 mm, ANT tubercles weakly developed, ABD TERG 1-5 and 7 with well-developed, dome-shaped marginal tubercles (MTu). SIPH and cauda dark, Cauda with

       14-15 hairs                                                                                        …..Aphis rukavishnikovi*

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

 

Calycanthus                                                 Calycanthaceae

      Calycanthus. fertilis = C. floridus var. glaucus                           

       C. floridus (incl. var. glaucus)            Aphis fabae, spiraecola

       C. fragrans  = Chimonanthus praecox

       C. occidentalis                               Myzus persicae

Use key to polyphagous aphids.

 

Calycophyllum                                            Rubiaceae

      Calycophyllum candidissimum    Aphis (Toxoptera) aurantii

 

Calycotome  see  Calicotome                                               Leguminosae

 

Calylophus                                                   Onagraceae

      Calylophus serrulata                            Aphis oenotherae

 

Calyptranthe see Hydrangea                                     Hydrangeaceae

 

Calyptranthes                                              Myrtaceae

      Calyptranthes chytraculia             Aphis (Toxoptera) aurantii

 

Calystegia                                                    Convolvulaceae

      Calystegia japonica                  Aphis nerii; Macrosiphum euphorbiae; Myzus persicae

                                                         Pseudomegoura magnoliae;

       C. sepium                                 Aphis fabae, gossypii, nerii; Aulacorthum solani;

                                                         Myzus persicae

       C. soldanella                            Macrosiphum euphorbiae; Myzus persicae

Use key to polyphagous aphids.

 

Calytrix  (including Llotskaya)                                      Myrtaceae

      Calytrix ericoides = C. tetragona

          C. tetragona                                Aphis gossypii

 

Camassia  (including Quamasia)                                  Asparagaceae

      Camassia hyacinthina = C. scilloides

       C. scilloides                                 Macrosiphum valerianae

       Camassia sp.                               Aphis asclepiadis

Key to apterae on Camassia:-

-      ANT tubercles weakly developed or undeveloped. SIPH without polygonal reticulation

                                                                                                                         …..Aphis asclepiadis

-      ANT tubercles well developed, with inner faces divergent. SIPH with a subapical zone of polygonal reticulation                                                                   …..Macrosiphum valerianae

 

Camelina                                                     Brassicaceae

      Camelina alyssum                      Aphis fabae, nasturtii

       C. microcarpa                             Aphis fabae; Lipaphis erysimi; Myzus persicae

       C. sativa                                      Aphis fabae; Brevicoryne brassicae

      Camelina sp.                               Brachycaudus helichrysi

Use key to apterae on Brassica.

 

Camellia                                                      Theaceae

      Camellia caudata                        Aphis (Toxoptera) aurantii

      C. chinensis = C. sinensis

      C. japonica                                  Aphis aurantii, citricidus, gossypii, odinae;

                                                            Ceratocallis camellis;

                                                            [Myzus inuzakurae Shinji (nomen dubium)];

                                                            Sinomegoura citricola

       C. kissi                                         Aphis (Toxoptera) aurantii

       C. oleifera                                   Aphis (Toxoptera) chaetosiphon

       C. sasanqua                                Aphis (Toxoptera) aurantii

       C. sinensis                                   Aphis aurantii, citricidus, gossypii, odinae;

                                                            Sinomegoura citricola

       C. thea = C. sinensis

       C. Χwilliamsi                               Aphis (Toxoptera) aurantii

       Camellia spp.                              [Aphis camellicola del Guercio (nomen dubium)];

                                                            Greenidea camelliae; Macrosiphum euphorbiae

Key to apterae on Camellia:-

1     Head with a pair of frontal horns between the antennal bases. SIPH pore-like

.....Ceratocallis camellis

-      Head without frontal horns. SIPH tubular                                                                        …..2

2     SIPH 0.25-0.32 Χ BL and clothed in numerous long hairs                …..Greenidea camelliae

-      SIPH without hairs or much shorter and with less than 10 hairs                                     …..3

3     SIPH 0.5-0.7 Χ cauda, and bearing 6-8 long pointed hairs. R IV+V 1.7-1.9 Χ HT II. Stridulatory apparatus present                                          …..Aphis (Toxoptera) chaetosiphon

-      SIPH 0.4-2.5 Χ cauda, without hairs. R IV+V less than 1.7 Χ HT II. Stridulatory apparatus present or absent                                                              …..go to key to polyphagous aphids 

      

Campanula                   Harebells, Bluebells     Campanulaceae

       Campanula alliariifolia              Uroleucon campanulae

       C. altaica = C. stevenii ssp. altaica  

       C. benthamii = C. dimorphantha

       C. carpatica                                 Dysaphis brevirostris; Myzus ascalonicus;

                                                            Uroleucon campanulae

       C. cashmeriana                           Uroleucon kashmiricum

       C. cephalotes = C. glomerata

       C. cochleariifolia                         Aulacorthum solani;

                                                            Uroleucon campanulae, campanulae ssp. longius

       C. colorata = C. pallida

       C. dimorphantha                        Jacksonia campanulata

       C. divergens = C. sibirica ssp. divergens

       C. erinus                                      Uroleucon campanulae

       C. expansa                                  [Uroleucon adenophorae]

       C. glomerata                               [Acyrthosiphon ilka]; Myzus persicae;

                                                            [Pemphigus bursarius];

                                                            Uroleucon campanulae, neocampanulae, nigrocampanulae,

                                                                rapunculoidis

       C. grossekii                                  Aphis fabae

       C. incanescens                            Uroleucon kashmiricum

       C. latifolia                                    Aphis fabae, solanella;

                                                            Uroleucon campanulae, nigrocampanulae;

                                                            [Hyperomyzus rhinanthi]

       C. lyrata                                       [Aphis sp. (Turkey, Toros et al. 2002: 31)]

       C. macrorhiza                             Uroleucon campanulae

       C. medium                                  Aphis fabae, solanella; Aulacorthum solani;

                                                            Macrosiphum euphorbiae;

                                                            Myzus persicae; Uroleucon kikioense, nigrocampanulae

       C. pallida                                     Jacksonia campanula; Uroleucon kashmiricum                  

       C. patula                                      Dysaphis sorbi; Uroleucon campanulae, rapunculoidis

       C. peregrina                                Uroleucon sp. (Lebanon, BMNH collection)

       C. persicifolia                              Aphis fabae; Dysaphis sorbi; Myzus ascalonicus, ornatus;

                                                            Neomyzus circumflexus;

                                                            Uroleucon campanulae, nigrocampanulae

       C. portenschlagiana                    Myzus ascalonicus

       C. punctata                                  Uroleucon neocampanulae

       C. pusilla = C. cochleariifolia

       C. pyramidalis                             Myzus ascalonicus;

                                                            Uroleucon minosmartelli, nigrocampanulae

       C. rapunculoides                         Aphis fabae; Aulacorthum solani;

                                                            Myzus ascalonicus, persicae

                                                            Uroleucon campanulae, nigrocampanulae, rapunculoidis

       C. rapunculus                             Uroleucon campanulae, nigrocampanulae, rapunculoidis

       C. rhomboidalis                          Uroleucon nigrocampanulae, rapunculoidis

       C. rotundifolia                             Aphis psammophila, [campanula-riparia Rafinesque];

                                                            Dysaphis brevirostris, sorbi; Myzus ascalonicus;

                                                            Rhopalosiphoninus staphyleae;

                                                            Uroleucon campanulae, campanulae ssp. longius

       C. sartorii                                    Rhopalosiphoninus staphyleae

       C. scheuchzeri                             Dysaphis sorbi; Uroleucon campanulae

       C. serrata                                     Aphis fabae

       C. sibirica (incl. ssp. divergens)        Uroleucon nigrocampanulae, rapunculoidis

       C. stevenii ssp. altaica                 Uroleucon nigrocampanulae                                               

       C. trachelium                              Aphis fabae, Aphis sp. (Germany, BMNH collection);

                                                            Uroleucon campanulae, nigrocampanulae

       C. versicolor                                Uroleucon minosmartelli

       C. vidalii = Azorina vidalii

       Campanula spp.                         [Aphis grossulariae]; Myzus ornatus;    Protaphis bimacula;                                                      Uroleucon ariegense, [cichorii], gredinae, [solidaginis]

Key to aphids on Campanula:-

1     SIPH dark with a distal zone of polygonal reticulation extending for at least 0.2 of length

                                                                                                                                                  …..2

-      SIPH pale or dark, but if dark then without polygonal reticulation                                …..11

2     Cauda pale or dusky                                                                                                          …..3

-      Cauda dark like SIPH                                                                                                       …..5

3     R IV+V shorter than (about 0.7 Χ) HT II, and bearing only 2 accessory hairs

…..Uroleucon kikioense

-      R IV+V 1.1-1.3 Χ HT II, with 5-8 accessory hairs                                                           …..4

4     First tarsal segments with 5 hairs. Tibiae wholly dark. ANT III with 50-66 rhinaria. Antesiphuncular sclerites present                                                      …..Uroleucon gredinae*

-      First tarsal segments with 3 (-4) hairs. Tibiae pale on basal 0.7. ANT III with 10-30 rhinaria. Antesiphuncular sclerites absent                                                   …..Uroleucon kashmiricum

5     SIPH 0.85-1.25 Χ cauda. R IV+V 0.8-1.05 Χ HT II                     …..Uroleucon campanulae

-      SIPH 1.5-2.35 Χ cauda. R IV+V 1.0-2.0 Χ HT II                                                             …..6

6     ANT III 2.8-4.4 Χ R IV+V                                                                                               …..7

-      ANT III 4.4-6.6 Χ R IV+V                                                                                               …..8

7     Body oval. R IV+V 1.0-1.33 Χ HT II. SIPH 2.9-4.2 Χ HT II    …..Uroleucon minosmartelli

-      Body spindle-shaped. R IV+V 1.7-2.0 Χ HT II. SIPH 5.4-6.4 Χ HT II

                                                   …..Uroleucon sp. on C. peregrina, Lebanon (BMNH collection)

8     Longest hairs on outer side of hind tibia 1.5-2.0  Χ diameter of tibia at midlength.  Longest hairs on ANT III 1.2-1.5 Χ BD III                                           …..Uroleucon neocampanulae

-      Longest hairs on outer side of hind tibia 0.9-1.2 Χ its diameter at midlength. Longest hairs on ANT III 0.8-1.3 Χ BD III                                                                                                 …..9

9     Cauda with 11-14 hairs. Longest hairs on ABD TERG 3-5 are at least 2Χ BD III. ANT PT/BASE 5.3-6.2. ANT III 5.7-7.1 Χ ANT VI BASE                    …..Uroleucon ariegense*

-      Cauda with 14-21 hairs, but if with 14-15 then longest hairs on ABD TERG 3-5 are less than 2Χ BD III.  ANT PT/BASE 6.2-8.3 (if less than 6.4 then cauda has 16-21 hairs). ANT III 7-8 Χ ANT VI BASE                                                                                                         …..10

10   ANT III with 19-58 rhinaria at a density of 20-58 per mm, extending over 0.42-0.94 of segment. (Al. with 43-78 rhinaria on ANT III and none on IV) …..Uroleucon rapunculoidis

-      ANT III with 52-122 rhinaria at a density of 45-84 per mm, extending over 0.77-0.97 of segment. (Al. with 97-137 rhinaria on ANT III, and usually without but sometimes with 1-7 on IV)                                                                                    …..Uroleucon nigrocampanulae

11   SIPH narrow at middle and flared distally, without an apical flange

                                                                                                            …..Jacksonia campanulata* 

-      SIPH tapering or cylindrical or swollen on distal half, with a distinct apical flange      …..12

12   Marginal tubercles (MTu) always present on ABD TERG 1 and 7                                …..13

-      No MTu on ABD TERG 1 and 7                                                                                     ….16

13   ANT PT/BASE about 0.7.  SIPH short, dark, conical, about 0.8 Χ the short triangular cauda. Dorsal abdomen with a pair of large dark spots anterior to SIPH              …..Aphis bimacula

-      ANT PT/BASE 1.8-3.8. SIPH 0.6-2.4 Χ cauda.  Dorsal abdomen with or without scattered dark markings, without a pair of large dark spots anterior to SIPH                                …..14

14   SIPH black, 0.6-0.8 Χ black cauda which bears 7-9 hairs

                                                                   …..Aphis sp(p). (Azores, Germany, BMNH collection)

-      SIPH pale or dark, 0.8-2.4 Χ cauda which bears 6-25 hairs                                            …..15

15   Cauda pale or dusky. SIPH dark or pale with dark apices. Dorsal abdomen without any dark markings. Very short-haired; e.g. hairs on ANT III 0.2-0.6 Χ BD III.  ABD TERG 8 with 2 short hairs. Cauda with 6-10 hairs                                                       …..Aphis psammophila

-      Cauda and SIPH dark. Dorsal abdomen with dark markings at least on ABD TERG 7 and 8. ABD TERG 8 with 2-7 long hairs. Cauda with 11-25 hairs                  …..Aphis fabae group

16   Cauda tongue-shaped, at least 1.5 Χ its basal width, with 4-12 hairs. SIPH swollen, cylindrical or tapering on distal half. ANT tubercles well developed

                                                                                               …...go to key to polyphagous aphids

-      Cauda triangular or helmet-shaped, about as long as its basal width, with 4-6 hairs. SIPH usually slightly swollen on distal half. ANT tubercles low                                             …..17

17    R IV+V 1.23-1.38 Χ HT II. Longest hairs on ABD TERG 8 15-22 μm. (Al. with 45-76 rhinaria on ANT III)                                                                                     .....Dysaphis sorbi

-      R IV+V 1.04-1.19 Χ HT II. Longest hairs on ABD TERG 8 10-15 μm. (Al. with 30-40 rhinaria on ANT III)                                                                           .....Dysaphis brevirostris

 

Campanumoea                                                   Campanulaceae

       Campanumoea javanica = Codonopsis javanica

 

Camphorosma                                              Amaranthaceae

       Camphorosma annua                Chaitaphis camphorosmae

       C. lessingii                                   Chaitaphis camphorosmae; Xerobion camphorosmae

       C. monspeliaca                           Chaitaphis camphorosmae; Xerobion camphorosmae

Couplet to separate these two species:-

(Note: Both species have long dorsal hairs and ANT PT/BASE less than 1.5.)

-      Cauda finger-like, more than 1.5 Χ its basal width, with 5-7 hairs. SIPH tubular, cylindrical or slightly swollen, narrowing just before flange. R IV+V similar in length to HT II. Dorsal abdominal hairs thick, rod-shaped, with flattened or furcate apices                                                                                                                                           …..Chaitaphis camphorosmae

-      Cauda bluntly conical to helmet-shaped, shorter than its basal width, with 13-18 hairs. SIPH are dark broad-based cones. R IV+V about 2 Χ HT II. Dorsal abdominal hairs pointed

                                                                                                            …..Xerobion camphorosmae

 

Campsis                                                        Bignoniaceae

       Campsis chinensis = C. grandiflora

       C. grandiflora                             Pseudomegoura magnoliae

       C. radicans                                  Aphis aurantii, craccivora, fabae, gossypii, nerii, [punicae],      spiraecola, thecomae, [Aphis sp. (Davletshina 1964)];

                                                            Macrosiphum euphorbiae; Myzus persicae

       C. Χ tagliabuana                         Aulacorthum solani; Macrosiphum euphorbiae;

                                                            Myzus ornatus

Key to apterae on Campsis:-

-      SIPH and cauda both black, with SIPH 1.8-2.2 Χ cauda, which bears only 4 hairs

                                                                                                                          .....Aphis thecomae*

-      Without that combination of characters; if SIPH and cauda are both black then cauda is relatively shorter or bears more hairs          .....go to key to polyphagous aphids, but note the possibility that specimens similar to Aphis gossypii but with SIPH less than 1.5 Χ cauda may be A. punicae.

 

Campyloneurum                                          Polypodiaceae

      Campyloneurum phyllitidis        Idiopterus nephrelepidis

(or try key to fern-feeding aphids under Polypodium)

 

Canadanthus                                               Compositae

      Canadanthus modestus              Uroleucon sp. nr bradburyi

 

Cananga                                                      Annonaceae

      Cananga odorata                        Aphis aurantii, craccivora

      Cananga sp.                         [Schoutedenia ralumensis]

Use key to polyphagous aphids.

 

 

Canarium                                                               Burseraceae

     Canarium album                         Aphis odinae; Sinomegoura citricola

     Canarium sp.                               [Acyrthosiphon elaeocarpi]

 

(Use key to polyphagous aphids)

 

 

Canavalia                                                    Leguminosae

      Canavalia cubensis = C. nitida

       C. ensiformis                               Aphis craccivora, gossypii

       C. gladiata                                   Aphis craccivora, gossypii

       C. maritima = C. rosea

       C. nitida                                       Aphis craccivora

       C. rosea                                       Aphis craccivora                 

Use key to polyphagous aphids, starting at couplet 24.

 

Cancrinia                                                     Compositae

      Cancrinia discoidea                    Macrosiphoniella sp. (Kadyrbekov 2005b)

 

Canna                                                          Cannaceae

      Canna coccinea                          Neomyzus circumflexus; Rhopalosiphum padi

       C. indica                                      Aphis fabae; Aulacorthum solani; [Hyalopterus pruni];

                                                            Macrosiphum euphorbiae; 

                                                            Myzus ascalonicus, ornatus, persicae;

                                                            Neomyzus circumflexus; Rhopalosiphoninus latysiphon;

                                                            Rhopalosiphum [nymphaeae], padi; [Sitobion sp.]

       C. orientalis = C. indica

       Canna spp.                                 Aphis gossypii, spiraecola; Brachycaudus helichrysi;

                                                            [Pentalonia kalimpongensis]; Sitobion miscanthi, neusi

Key to apterae on Canna:-

1     SIPH dark, tapering/cylindrical, with a distal zone of polygonal reticulation                  …..2

-      SIPH if dark then without a distal zone of polygonal reticulation, or markedly swollen

                                                                                                 .....go to key to polyphagous aphids

2     Dorsal abdomen with a dark irregular central sclerite. ANT dark beyond base of III, with PT/BASE more than 6.5                                                                                 .....Sitobion neusi

-      Dorsal abdomen membranous. ANT mainly pale, with ANT PT/BASE less than 6.5

                                                                                                                        .....Sitobion miscanthi

 

Cannabis                                                      Cannabaceae

      Cannabis gigantea = C. sativa

       C. ruderalis = C. sativa

       C. sativa                                       Aphis fabae, gossypii, [sativae Williams (see Davis

                                                                 1911, 271)], [Aphis sp. (Davletshina 1964, 124)];

                                                            Aulacorthum solani; Myzus persicae; Phorodon cannabis

Key to apterae on Cannabis:-

-      ANT tubercles bearing finger-like processes. Dorsal hairs with capitate apices

                                                                                                                     …..Phorodon cannabis

-      ANT tubercles without finger-like processes. Dorsal hairs not capitate

                                                                                               …...go to key to polyphagous aphids

 

Capillipedium                                              Poaceae

       Capillipedium assimile                Pseudoregma panicola

       C.parviflorum                             Asiphonella cynodonti; Chaetogeoica graminiphaga;

                                                            Sitobion miscanthi; Tetraneura multisetosa, fusiformis

       Capillipedium spp.                      Chaetogeoica polychaeta;

                                                            Tetraneura basui, javensis, radicola / yezoensis group

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

 

Capnoides                                                    Papaveraceae

      Capnoides brandegeei = Corydalis caseana ssp. brandegeei

      Capnoides sp.                              Macrosiphum sp. (Colorado, USA; BMNH collection, leg.

                (or Corydalis sp.?)                       F.C.Hottes & D. Hille Ris Lambers)

 

Capparis                                                       Capparaceae

       Capparis flexuosa                       Aphis craccivora

       C. leucophylla                             Aphis gossypii

       C. spinosa                                    Anuraphis capparidis; Aphis fabae, gossypii;

                                                            Brevicoryne brassicae

Key to apterae on Capparis:-

1     Cauda short, rounded or broadly triangular, not longer than its basal width in dorsal view                                                                                                                                               …..2

-      Cauda distinctly longer than its basal width in dorsal view                                                     

                                                                                                .….go to key to polyphagous aphids

2     Cauda broadly triangular. Dorsal abdomen with dark segmental markings. ABD TERG 1 and 7 without marginal tubercles (MTu)                                          …..Brevicoryne brassicae

-      Cauda rounded. Dorsal abdomen without dark markings. ABD TERG 1 and 7 with MTu

                                                              ….. Anuraphis capparidis* (possibly an immature Aphis?)

 

Capraria                                                       Scrophulariaceae

      Capraria biflora                          Aphis gossypii

 

Capriola    see  Cynodon                                                   Poaceae

 

Capsella                                                       Brassicaceae

      Capsella bursa-pastoris            Abstrusomyzus phloxae; Acyrthosiphon auctum, pisum;

                                                         Aphis aurantii, capsellae, [craccae], craccivora, fabae,

                                                             frangulae, gossypii, [loti ssp. gollmicki], nasturtii,

                                                             [plantaginis], [rhamnicola], sambuci, [scabiosae],

                                                             solanella, spiraecola, [symphyti];

                                                         Aulacorthum solani, [speyeri];

                                                         Brachycaudus cardui, helichrysi, lateralis;

                                                         Brachyunguis harmalae; Brevicoryne brassicae;

                                                         Dysaphis capsellae, rara,

                                                            [Dysaphis sp. (Shaposhnikov, 1987b)];

                                                         [Ericaphis fimbriata, wakibae]; Forda formicaria;

                                                         Geoica utricularia;

                                                         Lipaphis [alliariae],erysimi, pseudobrassicae;

                                                         Macrosiphum euphorbiae,[pyrifoliae, stellariae, tenuicauda];

                                                         Myzus antirrhinii, ascalonicus, cerasi, [certus], ornatus,

                                                             persicae;

                                                         [Nasonovia ribisnigri]; Nearctaphis bakeri;

                                                         Neomyzus circumflexus; Pemphigus sp.;

                                                         Prociphilus erigeronensis; Protaphis middletonii;

                                                         Rhopalosiphoninus latysiphon, staphyleae;

                                                         Rhopalosiphum [maidis], padi, [nymphaeae];

                                                         Sitobion akebiae, avenae; Smynthurodes betae

       C. grandiflora                           Brevicoryne brassicae

       C. rubella                                  Aphis solanella; Macrosiphum euphorbiae; Myzus persicae 

Key to aphids on Capsella:-

(C. bursa-pastoris (“Shepherd’s Purse”) is a popular “reserve host” throughout a large part of the world for numerous species of aphids, including many which are otherwise specific to other plant genera or families. It seems to be a plant that aphids - particularly grass and legume feeders - can utilise, and even form flourishing colonies on, usually at times of year when their normal hosts are scarce or unavailable. The key below attempts to discriminate the species most likely to be found on Capsella, but neither the list above or the key can be regarded as at all comprehensive.)

1     ANT PT/BASE less than 1. SIPH absent or, if present, then only about 0.5 Χ cauda      …..2

-      ANT PT/BASE more than 1. SIPH present and more than 0.5 Χ cauda                          …..7

2     ANT PT/BASE more than 0.5. Eyes multifacetted. SIPH present, about 0.5 Χ the finger-like cauda                                                                                             …..Brachyunguis harmalae

-      ANT PT/BASE less than 0.5. Eyes with 3 facets. SIPH absent (on roots). Cauda rounded, not developed                                                                                                                    …..3

3     ANT with primary rhinaria having fimbriate rims                                                             …..4

-      ANT with primary rhinaria having naked rims                                                                  …..6

4     Anal plate displaced dorsally. Hairs on dorsal body and appendages often spatulate. Wax gland plates absent                                                                                 …..Geoica utricularia

-      Anal plate not displaced dorsally. Hairs on body and appendages pointed. Wax gland plates present, at least on posterior abdominal segments                                                             …..5

5     Cauda and anal plate extended posteriorly, dark, and bearing numerous long hairs. R IV with 6-10 accessory hairs                                                            …..Prociphilus erigeronensis

-      Cauda and anal plate not extended posteriorly, with few short hairs. R IV without accessory hairs                                                                                                              …..Pemphigus sp.

6     Primary rhinaria with thick, sclerotic rims. ANT III 0.8-1.7 Χ the elongate ANT II.  R IV+V 1.0-1.8 Χ ANT II                                                                                 …..Smynthurodes betae

-      Primary rhinaria with thin rims. ANT III 3.3-4.6 Χ ANT II.  R IV+V 2.1-2.9 Χ ANT II

                                                                                                                        …..Forda formicaria

7     ANT tubercles absent or, if developed then small, and with median tubercle on front of head also developed; front of head therefore either convex, straight or sinuate in dorsal view. SIPH without polygonal reticulation                                                                                 …..8

-      ANT tubercles moderately to well developed, with inner faces convergent, parallel or divergent in dorsal view; if rather low and divergent then SIPH have distal polygonal reticulation                                                                                                                       …..19

8     SIPH almost cylindrical on basal half and slightly swollen on distal part, narrowing just before flange                                                                                                                      …..9

-      SIPH tapering gradually from base to flange, with no trace of swelling on distal part  …..12

9     Cauda broadly triangular, about as long as its basal width in dorsal view. ANT III 2.5-3.7 Χ SIPH. Dorsal abdomen with dark segmental markings                   …..Brevicoryne brassicae

-      Cauda tongue-or finger-shaped, longer than its basal width. ANT III 1.2-1.7 Χ SIPH. Dorsal abdomen without dark markings (except on ABD TERG 7-8)                                      …..10

10   ANT PT/BASE 3.0-4.0.  SIPH smooth on narrowest part just proximal to flange. ABD TERG 1 and 7 always with small marginal tubercles (MTu)             …..Rhopalosiphum padi

-      ANT PT/BASE 1.8-2.7. SIPH with transverse striae on narrowest part just proximal to flange. ABD TERG 1 and 7 without Mtu                                                                      …..11

11   ANT III + PT together 1.95-2.5 Χ SIPH (90% of specimens less than 2.4Χ)

                                                                                                                          …..Lipaphis erysimi

-      ANT III + PT together 2.1-3.2 Χ SIPH (90% of specimens more than 2.4Χ)                       

                                                                                                           …..Lipaphis pseudobrassicae

12   ABD TERG 1 and 7 always with MTu. Spinal tubercles (STu) absent. Cauda tongue-shaped or bluntly conical, not constricted at base                                                                             .....13    

-      ABD TERG 1 and 7 either without MTu, or if MTu are present then they are always in association with STu on ABD TERG 7 and/or 8. Cauda helmet-shaped or bluntly conical, somewhat constricted at base                                                                                          …..14

13   ABD TERG 2-4(-5) regularly with well-developed marginal tubercles (MTu), of basal diameter about equal to distal diameter of SIPH                                         …..Aphis sambuci

-      ABD TERG 2-4 without or only sporadically with small MTu    …..polyphagous Aphis spp.

       (Go to key to polyphagous aphids, starting at couplet 24, but note that specimens running to gossypii / frangulae group may be capsellae, and specimens running to craccivora may be loti ssp. gollmicki.)

14   Abdomen with a extensive dark dorsal shield                                                                …..15

-      Abdomen without extensive dark markings anterior to SIPH                                        …..16

15   Longest hairs on hind femur 10-25 mm                                           …..Brachycaudus lateralis

-      Longest hairs on hind femur more than 25 mm long                         …..Brachycaudus cardui

16   SIPH dark, with normal imbrication, and more than 1.5 Χ cauda. MTu are always present, at least on ABD TERG 1-4                                                                                                  …..17

-      SIPH pale, smooth or spiculose, less than 1.5 Χ cauda. MTu rarely present                   …..18

17   Longest hairs on ANT III 29-42 μm, 1.3-1.8 Χ BD III, and hairs on ABD TERG 8 are 58-82 μm. R IV+V 1.12-1.24 Χ HT II                                                           .....Dysaphis capsellae*

-      Longest hairs on ANT III 9-13 μm, 0.4-0.6 Χ BD III, and hairs on ABD TERG 8 are 29-39 μm. R IV+V 1.21-1.31 (-1.58) Χ HT II                                                  .....Dysaphis rara (?)*

18   SIPH smooth. Spiracular apertures large and rounded                …..Brachycaudus helichrysi

-      SIPH ornamented with rows of minute spicules.  Spiracular apertures reniform

                                                                                                                      …..Nearctaphis bakeri

19   SIPH pale, without polygonal reticulation , tapering/cylindrical, and only 0.12-0.20 Χ BL and 0.85-1.33 Χ cauda                                                                     …..Acyrthosiphon auctum

-      SIPH if pale, tapering/cylindrical and without polygonal reticulation, then more than 0.20 Χ BL and/or more than 1.25 Χ cauda                                                                                  …..20

20   BL 2.5-5.5 mm. SIPH pale, without any subapical reticulation,  very long and attenuate distally (thinner than middle part of hind tibia), but less than 2 Χ cauda                                

                                                                                                                  …..Acyrthosiphon pisum

-      If BL is more than 2.5 mm, and SIPH are pale and less than 2 Χ cauda, then SIPH have subapical polygonal reticulation                                                                                      …..21

21   SIPH black, 1.1-1.9 Χ cauda, with polygonal reticulation on distal 0.15-0.40 of length. R IV+V very short and blunt, 0.6-0.8 Χ HT II                                                                   …..22

-      Without this combination of characters                                                                           …..23

22   SIPH 1.4-1.9 Χ cauda                                                                .....Sitobion akebiae/miscanthi

-      SIPH 1.1-1.4 Χ cauda                                                                                  .....Sitobion avenae

23   SIPH black, tapering, coarsely imbricated. Dorsal cuticle extensively sclerotised, often wholly dark, and wrinkled with a jigsaw puzzle-like pattern. Large, dark, densely spiculose  postsiphuncular sclerites are present                                                               …..Myzus cerasi

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

 

Capsicum                                                     Solanaceae

       Capsicum annuum                  [Acyrthosiphon gossypii, pisum];

         (incl. baccatum, frutescens)           Aphis craccivora,  fabae, gossypii, nasturtii, spiraecola;

                                                         Aulacorthum solani, [Brevicoryne brassicae];

                                                         [Hayhurstia atriplicis]; Macrosiphum euphorbiae;

                                                         Myzus ascalonicus, ornatus, persicae;

                                                         Neomyzus circumflexus; Protaphis middletonii;

                                                         Rhopalosiphoninus latysiphon;

                                                         Rhopalosiphum rufiabdominale; [Sipha flava];

                                                         [Tinocalloides montanus]

       C. dulce = C. annuum

         C. indicum = C. annuum

Use key to polyphagous aphids.

 

Caragana                                                     Leguminosae

      Caragana arborescens             Acyrthosiphon caraganae, caraganae ssp. occidentale,

                                                              caraganae spp. sachalinense, pisum;

                                                         Aphis craccivora, cytisorum;

                                                         Therioaphis aizenbergi, kundurensis, tenera

       C. auriantiaca                          Aphis craccivora

       C. balchaschensis                     Acyrthosiphon caraganae; Aphis craccivora

       C. boisii                                     Therioaphis tenera

       C. camilli-schneideri                Aphis craccivora

       C. caragana                              Therioaphis tenera

       C. chamlagu = C. sinica

       C. chaniaga                              Acyrthosiphon caraganae; Aphis craccivora

       C. changduensis                       Aphis craccivora

       C. decorticans                           Aphis craccivora; Therioaphis tenera

       C. frutex                                   Acyrthosiphon caraganae; Aphis craccivora; Myzus persicae;

                                                         Therioaphis beijingensis, tenera, tenera ssp. frutex

       C. fruticosa                               Therioaphis kundurensis, tenera

       C. jubata                                   Therioaphis tenera

       C. kirghisorum                         Aphis craccivora

       C. microphylla                          Acyrthosiphon caraganae; Aphis fabae; Myzus persicae

       C. mollis = C. frutex

       C. pleiophylla                           Therioaphis tenera

       C. pygmaea                              Acyrthosiphon caraganae; Aphis craccivora

       C. sinica                                    Acyrthosiphon caraganae; Aphis craccivora;

                                                         Therioaphis tenera

       C. spinosa                                 Acyrthosiphon caraganae; Aphis craccivora

       C. turkestanica                         Acyrthosiphon caraganae; Aphis craccivora

       Caragana sp.                            Acyrthosiphon kondoi; [Betulaphis brevipilosa];

                                                         [Titanosiphon dracunculi]

Key to aphids on Caragana:-

1     Cauda knobbed, anal plate bilobed. SIPH as short, truncate cones. ANT PT/BASE less than 1.7 (applies to both apterae and alatae)                                                                            …..2

-      Cauda tongue- or finger-shaped, anal plate entire. SIPH tubular. ANT PT/BASE more than 2.0 (applies to both apterae and alatae)                                                                            …..6

2     ABD TERG 1-5 each with 5 or 6 long, capitate spinopleural hairs arising from pigmented sclerites (applies to both apterae and alatae)                                  …..Therioaphis aizenbergi

-      ABD TERG 1-5 each with only two slightly capitate spinal hairs, with basal sclerites pale or dark (applies to both apterae and alatae)                                                                          …..3

3     SIPH dark. Spinal hairs arising from dark sclerites, those on ABD TERG 3 being displaced laterally (all viviparae are alate)                                                     …..Therioaphis beijingensis*

-      SIPH pale. Spinal hairs arising from pale/dusky sclerites or tuberculate bases, those on ABD TERG 3 not laterally displaced                                                                                         …..4

4     Apt. vivip. present. Both apt. and al. with spinal hairs arising from tuberculate bases (less well developed in al., which have 12-20 sec. rhin. on ANT III)

                                                                                                            .....Therioaphis kundurensis*

-      All vivip. are al., with spinal hairs on flat or weakly convex sclerites, which may be fused medially on some tergites. ANT III with 7-15 sec. rhin.`                                                  .....5

5     (Al.) Dorsal body hairs 11-25 μm long, and flabellate. Forewing veins heavily bordered with fuscous                                                                                   .....Therioaphis tenera ssp. frutex

-      (Al.) Dorsal body hairs 19-41 μm long, with blunt or capitate apices. Forewing veins weakly bordered                                                                                        .....Therioaphis tenera s. str.

6     SIPH gradually tapering or cylindrical on distal half, 4.75-8.5 Χ R IV+V, without any subapical polygonal reticulation                                                                                        …..7

-      SIPH less than 4.5 Χ R IV+V, or if more then with subapical polygonal reticulation      …..9

7     ANT I longer than wide and bearing 9-23 hairs. SIPH attenuate distally, thinner than hind tibia at midlength. ANT VI BASE 1.6-2.9 Χ R IV+V                      …..Acyrthosiphon pisum

-      ANT I not longer than wide, bearing 7-10 hairs. SIPH not so attenuate distally, as thick as or thicker than (0.95-1.7 Χ) diameter of hind tibia at midlength. ANT VI BASE 1.1-1.7

       Χ R IV+V                                                                                                                          …..8

8     SIPH 1.75-2.05 Χ cauda. Diameter of SIPH at midlength 0.95-1.45 Χ diameter of hind tibia at midlength                                                                                      …..Acyrthosiphon kondoi

-      SIPH 1.45-1.9 Χ cauda (only more than 1.8 Χ in large specimens with SIPH at least 0.9 mm). Diameter of SIPH at midlength 1.25-1.7 Χ diameter of hind tibia at midlength

                                                                                                           …..Acyrthosiphon caraganae

9     Dorsum with an extensive black shield                                                                           …..10

-      Dorsum without an extensive black shield                      …..go to key to polyphagous aphids

10   R IV+V 0.88-1.16 Χ HT II (mostly 0.9-1.05 X). 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 X). Anterior half of genital plate with 2-8 hairs (mode 4, mean 5.2)                                                                                   …..Aphis cytisorum

 

 

Caraxylon    see  Iresine                                                    Amaranthaceae

 

Cardamine                                                   Brassicaceae

      Cardamine africana                 Aulacorthum solani; Lipaphis erysimi; Myzus ornatus

       C. amara                                  Aphis fabae, nasturtii, triglochinis;

                                                         Macrosiphum euphorbiae; Myzus cerasi; [Sitobion avenae]

       C. chenopodifolia                     Brevicoryne brassicae

        C. flexuosa.                              Aphis fabae, nasturtii, triglochinis; Brevicoryne brassicae;

                                                         Lipaphis erysimi, pseudobrassicae;

                                                         Myzotoxoptera wimshurstae; Myzus ascalonicus, cerasi;

                                                         Smynthurodes betae

        C. flexuosa ssp. fallax = C. parviflora

       C. heterophylla (?)                    Aulacorthum solani; Myzus cerasi, ornatus, persicae

       C. hirsuta                                  Aulacorthum solani; Brevicoryne brassicae;

                                                         Jacksonia papillata; Lipaphis erysimi;

                                                         Macrosiphum euphorbiae; Myzotoxoptera wimshurstae;

                                                         Myzus ascalonicus, ornatus, persicae;

                                                         Pseudomegoura magnoliae;

                                                         Rhopalosiphoninus latysiphon, staphyleae

       C. impatiens                             Aphis [cardamine Shinji, 1922 – nomen nudum], gossypii,       

                                                              nasturtii, triglochinis;

                                                         Brevicoryne brassicae; [Lipaphis fritzmuelleri];

                                                         Macrosiphum euphorbiae; Myzotoxoptera wimshurstae;

                                                         Myzus ascalonicus, persicae

       C. lyrata                                    Aphis mizutakarashi; [Cavariella salicicola]

       C. oligosperma                         Myzus ascalonicus

       C. parviflora                             Myzus persicae

       C. pratensis                               Aphis triglochinis; Brevicoryne brassicae;

                                                         Myzotoxoptera wimshurstae; Pemphigus populitransversus

       C. raphanifolia                         Macrosiphum euphorbiae; Myzus ascalonicus, ornatus 

       C. sylvatica = C. flexuosa

       Cardamine spp.                       Aphis craccivora

Key to apterae on Cardamine:-

1     ANT PT/BASE less than 0.5. Eyes 3-faceted. SIPH absent                                             …..2

-      ANT PT/BASE more than 0.5. Eyes multifaceted. SIPH present, tubular                       …..3

2     Dorsal body and antennae clothed in numerous fine hairs. ANT II much longer than ANT I. Primary rhinaria with thick sclerotised rims. Wax glands not evident

                                                                                                                    .….Smynthurodes betae

-      Body and antennae sparsely hairy. ANT I and II of similar length. Primary rhinaria with ciliate rims. Abdomen with wax glands on ABD TERG 3-7 (usually 4 glands on each of ABD TERG 3-6 and 2 on ABD TERG 7)                            .....Pemphigus populitransversus

3     ANT tubercles absent or weakly developed, with middle part of front of head also developed so that front of head is either convex, straight or sinuate in dorsal view        …..4

-      ANT tubercles moderately to well developed, with inner faces convergent, parallel or divergent, and median tubercle on front of head undeveloped or only weakly developed, so that there is a frontal sinus                                                                                               …..12

4     ABD TERG 1 and 7 without marginal tubercles (MTu). SIPH almost cylindrical on basal half and slightly swollen on distal part, narrowing just before flange                              …..5

-      ABD TERG 1 and 7 with MTu. SIPH tapering gradually from base to flange, with no trace of swelling on distal part                                                                                                   …..7

5     Cauda broadly conical, about as long as its basal width in dorsal view. ANT III 2.5-3.7 Χ SIPH. Dorsal abdomen with dark segmental markings                   …..Brevicoryne brassicae

-      Cauda tongue-shaped, longer than its basal width. ANT III 1.2-1.7 Χ SIPH. Dorsal abdomen without dark markings on segments anterior to SIPH                                                       .....6

6     ANT III + PT together 1.95-2.5 Χ SIPH (90% of specimens less than 2.4Χ)

                                                                                                                          …..Lipaphis erysimi

-      ANT III + PT together 2.1-3.2 Χ SIPH (90% of specimens more than 2.4Χ)

                                                                                                           …..Lipaphis pseudobrassicae

7     Dorsum with an extensive black shield                                                    …..Aphis craccivora

-      Dorsum without extensive pigmentation                                                                           …..8

8     ANT PT/BASE 1.1-1.75.  Cauda with 5-11 hairs. (Al. with 25-60 rhinaria on ANT III, 9-25 on IV and 7-17 on V)                                                                             …..Aphis triglochinis

-     ANT PT/BASE 1.8-3.0.  Cauda with 4-24 hairs. (Al. with 5-33 rhinaria on ANT III, 0-10 on IV and 0-2 on V)                                                                                                              …..9

9     SIPH mainly pale or dusky, only dark towards apices                                 …..Aphis nasturtii

-      SIPH entirely dark                                                                                                          …..10

10   Cauda paler than SIPH and bearing 4-8 hairs                                              …..Aphis gossypii

-     SIPH and cauda both dark, cauda bearing 8-24 hairs                                                     …..11

11   Dorsal abdomen without dark markings. Cauda with 8-14 hairs. (Al. with 2-6 rhinaria on ANT IV)                                                                                             .....Aphis mizutakarashi*

-      Dorsal abdomen with dark cross-bands on ABD TERG 7 and 8, and usually with small dark spots anterior to SIPH. Cauda with 11-24 hairs. (Al. usually without rhinaria on ANT IV)

                                                                                                        .....Aphis fabae

12  SIPH 3.6-5.0 Χ cauda, which is helmet-shaped, shorter than its basal width. Head spinulose, and ANT III with 1-4 rhinaria on basal half                           …..Myzotoxoptera wimshurstae

-      SIPH less than 3 Χ cauda and other characters not in that combination                          .....13

13   SIPH dark, cylindrical, coarsely imbricated, 2.3-2.9 Χ cauda. Dorsal cuticle sclerotic, strongly wrinkled, with large dark marginal sclerites                                      .....Myzus cerasi

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

 

Cardaminopsis                                             Brassicaceae

      Cardaminopsis arenosa = Arabidopsis arenosa

       C. halleri = Arabidopsis halleri

       C. hispida = Arabidopsis lyrata ssp. petraea

      

Cardaria                                                       Brassicaceae

      Cardaria draba = Lepidium draba

       C. repens = Lepidium draba ssp. chalepense

 

Cardiocrinum                                              Liliaceae

      Cardiocrinum giganteum             Rhopalosiphoninus staphyleae

 

Cardiospermum                                           Sapindaceae

       Cardiospermum halicacabum      Aphis gossypii; [Greenidea cayratiae]

 

Carduus                                                       Compositae

       Carduus acanthoides                  Aphis acanthoidis, fabae, solanella, [symphyti];

           (= crispus auct. nec. L.)                  Brachycaudus cardui; Capitophorus carduinus;

                                                            Macropodaphis tubituberculata; [Protaphis sp.];

                                                            Uroleucon aeneum, cichorii, macrosiphon

       C. albidus = C. arabicus

       C. americanus                             Aphis fabae; Brachycaudus cardui

       C. arabicus                                  Aphis [euonymi], fabae, solanella; Brachycaudus cardui;                                                         Protaphis anuraphoides; Protrama radicis;

                                                            Uroleucon [jaceae], [picridis (misident. cichorii?)]

       C. argentatus                               Aphis fabae, gossypii

       C. armatus (?)                             Uroleucon aeneum

       C. arvensis  = Cirsium arvense

       C. assoi = C. nigrescens ssp. vivariensis

       C. australis = C. pycnocephalus ssp. marmoratus

       C. bourgaeanus = C. bourgaei

       C. bourgaei                                 Aphis fabae; Brachycaudus cardui; Uroleucon aeneum      

       C. candicans                               Aphis fabae                         

       C. carduelis                                 Aphis fabae

       C. carlinifolius = C. defloratus ssp. carlinifolius

       C. carlinoides ssp. hispanicus     Aphis fabae

       C. carpetanus                              Aphis fabae; Brachycaudus cardui; Uroleucon aeneum

       C. clavulatus                               Aphis fabae; Brachycaudus cardui

       C. colchicus                                 Brachycaudus cardui

       C. collinus                                   [Protaphis sp.]

       C. corymbosus                            Aphis solanella                   

       C. crispus L.                                Aphis acanthoidis, fabae, gossypii;

            (C. crispus auct. nec. L.                 Brachycaudus cardui, helichrysi;

                     = C. acanthoides)               Capitophorus carduinus, elaeagni; Chitinosiphum cardui;

                                                            Macropodaphis tubituberculata; Myzus persicae;

                                                            [Protaphis sp.]; Uroleucon aeneum, [jaceae ssp. henrichi]

       C. defloratus (incl. ssp.                  Aphis fabae, fabae ssp. cirsiiacanthoidis, solanella,

              carlinifolius, glaucus,                     wartenbergi;

                                medius)                 Aulacorthum solani; Brachycaudus cardui;

                                                            Uroleucon aeneum, macrosiphon

       C. edelbergii                                Capitophorus elaeagni;

                                                            [Uroleucon jaii (Bhagat 1981b; nomen nudum)]

       C. flodmanii = Cirsium flodmanii

       C. glaucus  =  C. defloratus ssp. glaucus

       C. hamulosus                              Aphis carduicola, fabae, solanella, wartenbergi;

                                                            Brachycaudus cardui; Myzus persicae

       C. incanus = C. crispus

       C. kerneri                                    Brachycaudus cardui

       C. lanceolatus  = Cirsium vulgare

       C. leiophyllus = C. nutans

       C. leptacanthus                           Capitophorus elaeagni; Myzus ornatus;

                                                            Uroleucon compositae

       C. litigiosus                                  Aphis fabae; [Protaphis terricola]; Uroleucon aeneum

       C. marianus = Silybum marianum

       C. marmoratus = C.  pycnocephalus ssp. marmoratus

       C. medius = C. defloratus ssp. medius

       C. myriacanthus                         Capitophorus carduinus

       C. nigrescens                               Aphis fabae; Brachycaudus helichrysi; Uroleucon aeneum