HOST LISTS and KEYS

5 SIPH with distal part strongly curved outwards, swollen on the curve and then narrowing abruptly, the narrow section being completely smooth, the rest coarsely imbricated

…..Phorodon humulifoliae

- SIPH with distal part slightly curved outwards but tapering gradually over most of length, there being no abrupt transition to a smooth narrow apical section …..6

6 Finger-like projection on ANT tubercle reaching apex of ANT I or beyond, its length greater than that of ANT II. R IV+V 1.1-1.35 × HT II …..Phorodon humuli

- Finger-like projection on ANT tubercle not reaching apex of ANT I, its length less than that of ANT II. R IV+V 1.35-1.6 × HT II …..Phorodon japonensis

7 Cuticle of head spiculose or nodulose, with inner faces of ANT tubercles scabrous and steep-sided, parallel or apically convergent. SIPH without polygonal reticulation

…..go to key to polyphagous aphids, starting at couplet 5

- Cuticle of head smooth, inner faces of ANT tubercles divergent. SIPH with a subapical zone of polygonal reticulation …..8

8 First tarsal segments with 4 hairs. ANT PT/BASE less than 5. ANT III with 11-12 rhinaria. ANT and dorsal body hairs expanded apically …..Karamicrosiphum humuliosum*

- First tarsal segments with 3 hairs. ANT PT/BASE more than 5. ANT III with 1-10 rhinaria. ANT and dorsal body hairs blunt or pointed …..9

9 SIPH slightly swollen on distal half proximal to reticulated section, which extends for less than 0.1 of SIPH length. SIPH 2.4-2.6 × cauda …..Macrosiphum hamiltoni

- SIPH cylindrical on distal half, with reticulation extending 0.13-0.2 of length. SIPH 1.7-2.2 × cauda …..Macrosiphum euphorbiae

Hutchinsia Brassicaceae

Hutchinsia alpina = Hornungia alpina

Hyacinthus Asparagaceae

Hyacinthus orientalis Aphis gossypii; Myzus ascalonicus, persicae;

Neomyzus circumflexus

Hyacinthus sp. Aphis craccivora; Aulacorthum solani

Use key to polyphagous aphids.

Hyalea Asteraceae

Hyalea pulchella Aphis fabae; Capitophorus elaeagni; Protaphis hyaleae;

Uroleucon minor; Xerobion zoijae

Use key to apterae on Centaurea.

Hyaloseris Asteraceae

Hyaloseris cinerea Uroleucon gochnatiae

Hybanthus (including Ionidium) Violaceae

Hybanthus concolor Myzus persicae

Hydrangea (including Calyptranthe) Hydrangeaceae

Hydrangea altissima = H. anomala

H. anomala Chakrabartiaphis hydrangeae

H. arborescens Aphis spiraecola; Myzus persicae

H. aspera Aphis gossypii; Aulacorthum solani;

Tuberoaphis hydrangeae

H. bretschneideri Myzus persicae

H. hortensis = H. macrophylla

H. involucrata Aphis spiraecola; Macromyzus woodwardiae;

Rhopalosiphoninus deutzifoliae

H. macrophylla Acyrthosiphon malvae;

Aphis citricidus, fabae, gossypii, nerii, odinae, spiraecola;

Aulacorthum solani; Macromyzus woodwardiae;

Macrosiphum euphorbiae;

Myzus ascalonicus, persicae, philadelphi;

Neomyzus circumflexus; Pseudomegoura magnoliae;

[Rhodobium porosum]; Rhopalosiphoninus hydrangeae;

[Sitobion fragariae]

H. paniculata Aphis fabae, spiraecola; Eumyzus darjeelingensis;

Macromyzus woodwardiae;

Rhopalosiphoninus deutzifoliae, hydrangeae

H. petiolaris Aphis spiraecola; Eumyzus hydrangi;

Macromyzus woodwardiae;

?Myzus sp. (BMNH collection, Japan, leg. M. Miyazaki);

Rhopalosiphoninus deutzifoliae, hydrangeae,

Rhopalosiphoninus sp. (BMNH collection, Japan, leg.

M. Miyazaki);

Taiwanomyzus montanus

H. robusta Tuberoaphis hydrangeae ssp. digitata

H. scandens = H. petiolaris

H. sikokiana Macrosiphum woodwardiae;

Rhopalosiphoninus deutzifoliae

H. strigosa Aphis gossypii; Aulacorthum solani

Hydrangea ssp. Myzus ornatus

Key to apterae on Hydrangea:-

1 Dorsal body hairs arising from finger-like or tapering processes that are much longer than their basal widths (e.g. Fig.32a,b) …..2

- Dorsal body hairs not arising from finger-like processes …..4

2 Longest dorsal abdominal processes only about 0.05 mm long

…..Tuberoaphis hydrangeae*

- Longest dorsal abdominal processes more than 0.1 mm long …..3

3 BL 1.1-2.2 mm. Spinal abdominal processes 0.12-0.21 mm long (fundatrix, Fig.32a) or 0.05-0.13 mm long (2^nd generation), with thick apices. Eyes without evident ocular tubercles

…..Tuberoaphis hydrangeae ssp. digitata

- BL c. 3.1-3.2 mm. Spinal abdominal processes 0.33-0.54 mm long (fundatrix), with narrow apices (Fig.32b). Ocular tubercles evident at posterior edge of eye

…..Macromyzus woodwardii*

4 Cauda swollen on basal half, narrowing abruptly to a cylindrical apical section, the swollen part bearing 4 hairs. Dorsal body hairs long and finely pointed; the longest hairs on ABD TERG 3 are 80-85 μm, 3.5-4.0 × ANT BD III ….. Chakrabartiaphis hydrangeae *

- Cauda tapering, triangular, tongue or finger-shaped, sometimes constricted in the middle but without a much narrower cylindrical apical section, and often with more than 4 hairs. Dorsal body hairs blunt or acutely pointed, less than 60 μm, less than 3.5 × ANT BD III …..5

5 SIPH 2.55-4.3 × cauda, and slightly to markedly clavate. (Al. with rhinaria distributed ANT III 13-64, IV 0-22, V 0-6) …..6

- SIPH less than 2.5 × cauda, tapering, cylindrical or clavate. (Al. generally with less rhinaria)

…..11

6 SIPH very markedly inflated, with diameter of balloon-like swollen part 2.0-4.5 × minimum diameter of basal part ......Rhopalosiphoninus deutzifoliae

- SIPH tapering, cylindrical, or swollen with diameter of swollen part less than 2 × minimum diameter of basal part …..7

7 SIPH dark and imbricated …..8

- SIPH pale and smooth …..9

8 ANT III with 3-26 rhinaria. Tibiae pale. Cauda tongue- or finger-shaped, rounded at apex, with 4-5 hairs …..Taiwanomyzus montanus

- ANT III without rhinaria. Tibiae dusky/dark. Cauda triangular, with 6-7 hairs

…..Myzus philadelphi

9 SIPH (Fig.32c) thick and markedly clavate, 2.55-3.2 × cauda; maximum width of swollen part 1.3-1.9 × minimum width of basal part, and about equal to or greater than R IV+V. ANT PT/BASE 3.8-4.9. ANT III usually with 1-3 rhinaria near base

…..Rhopalosiphoninus hydrangeae

- SIPH less clavate, 3.1-4.3 × cauda; max. width of swollen part 1.2-1.3 × minimum width of basal part, and 0.4-0.6 × R IV+V. ANT PT/BASE 2.0-2.7. ANT III without rhinaria. (Possibly fundatrices of species migrating in second generation to secondary host) .....10

10 ANT hairs very short and inconspicuous, less than 0.3 × BD III. ANT PT/BASE 2.0-2.1. SIPH 3.1-3.3 × cauda .....Rhopalosiphoninus sp., Japan (Miyazaki 2388, 2419)

- ANT hairs evident, 0.6-0.7 × BD III. ANT PT/BASE c.2.6. SIPH 4.2-4.3 × cauda

.....?Myzus sp., Japan (Miyazaki 2417, 2434)

11 Head densely spiculose or nodulose, with ANT tubercles weakly developed and divergent. Dorsal hairs acutely pointed, with slightly tuberculate bases; 0.8-3 × ANT BD III …..12

- Either head is without spicules or nodules or, if head is spiculose or nodulose then ANT tubercles are well developed and steep-sided, with inner faces parallel or apically convergent, and dorsal hairs are very short and blunt (less than 0.5 × ANT BD III)

…..go to key to polyphagous aphids

12 Longest hairs on ABD TERG 2-5 about equal to ANT BD III. R IV+V 0.8-1.0 × HT II

…..Eumyzus darjeelingensis*

- Longest hairs on ABD TERG 2-5 more than 2 × ANT BD III. R IV+V 1.0-1.2 × HT II

…..Eumyzus hydrangi

Hydriastele Arecaceae

Hydriastele ramsayi Cerataphis brasiliensis

Use key to apterae on palms under Calamus.

Hydrilla Hydrocharitaceae

Hydrilla verticillata Rhopalosiphum nymphaeae

Hydrocharis Hydrocharitaceae

Hydrocharis morsus-ranae Rhopalosiphum nymphaeae

Hydrocharis sp. [Uroleucon obscurum – Börner 1952 (error?)]

Hydrochloa see Luziola Poaceae

Hydrocleys Alismataceae

Hydrocleys nymphoides Rhopalosiphum nymphaeae

Hydrocotyle Araliaceae

Hydrocotyle bonariensis Aulacorthum solani

H. sibthorpiodes Aulacorthum solani; Neomyzus circumflexus

H. verticillata Neomyzus circumflexus

H. vulgaris Aulacorthum solani; Hyadaphis coriandri;

Pemphigus sp. (?protospirae); Rhopalosiphum nymphaeae

Hydrocotyle spp. Myzus ornatus; Smynthurodes betae

Key to apterae on Hydrocotyle:-

1 SIPH very short, 0.60-0.82 × cauda; thick at base and swollen distally, constricted just proximal to the well-developed flange …..Hyadaphis coriandri

- SIPH (if present) much longer than cauda; clavate, cylindrical or tapering …..2

2 SIPH clavate. Dorsal cuticle with a reticulate sculpture consisting of bead-like spinule

…..Rhopalosiphum nymphaeae

- SIPH (if present) not clavate and dorsal cuticle without bead-like spinulose reticulation

…..go to key to polyphagous aphids

Hygrohypnum Amblystegiaceae

Hygrohypnum luridum Pemphigus hydrophilus (?)

H. ochraceum [Pachpappa rosettei]

(or use key to moss-feeding aphids under Polytrichum)

Hydrophyllum Hydrophyllaceae

Hydrophyllum tenuipes Aphis sp. (Leonard 1974, 102)

Hygrophila Acanthaceae

One polyphagous aphid species, Aphis gossypii, is recorded from three Hygrophila spp.; auriculata, costata, difformis.

Hylocereus Cactaceae

Hylocereus undatus Aphis craccivora

Hylocomium Hylocomiaceae

Hylocomium armoricum Jacksonia papillata; Melaphis rhois

H. brevirostre Muscaphis musci

H. flagellare Muscaphis musci

H. splendens Jacksonia papillata; Muscaphis escherichi;

[Pachypappa sacculi]; [Prociphilus xylostei];

Pseudacaudella rubida

H. squarrosum Muscaphis musci

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

Hylotelephium Crassulaceae

Hylotelephium erythrostictum Aphis sedi

H. pallescens Aphis sedi

H. spectabile Aphis sedi

H. telephium = Sedum telephium

Hymenanthera see Melicytus Violaceae

Hymenanthes Ericaceae

Hymenanthes californica Illinoia rhododendri

H. macrophylla Illinoia rhododendri

H. maxima Aulacorthum solani; Illinoia azaleae, rhokalaza

Use key to apterae on Rhododendron.

Hymenocardia Euphorbiaceae

Hymenocardia acida Aphis aurantii, citricidus, gossypii

H. ulmoides Aphis(Toxoptera) aurantii

(Use key to polyphagous aphids)

Hymenodictyon Rubiaceae

Hymenodictyon sp. Greenideoida lambersi

Hymenosporum Pittosporaceae

Hymenosporum flavum Aphis gossypii, spiraecola; Myzus antirrhinii

Use key to polyphagous aphids.

Hymenoxys Asteraceae

Hymenoxys hoopesii Macrosiphum euphorbiae, valerianae;

Smynthurodes betae; Uroleucon martini

Use key to apterae under Helenium.

Hyocomium Hypnaceae

Hyocomium armoricum Jacksonia papillata

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

Hyoscyamus Solanaceae

Hyoscyamus albus Aulacorthum solani

H. muticus Myzus persicae

H. niger Aphis fabae, gossypii, [hyoscyami Kittel 1827 – invalid

name];

Aulacorthum solani; Myzus persicae

H. pusillus Aphis craccivora

Hyoscyamus sp. Macrosiphum euphorbiae

Use key to polyphagous aphids.

Hyoseris Asteraceae

Hyoseris radiata Aphis gossypii; Aulacorthum solani;

Macrosiphum euphorbiae; Myzus persicae;

Nasonovia ribisnigri;

Uroleucon [cichorii], sonchi, Uroleucon sp. (Spain, BMNH

collection)

Key to apterae on Hyoseris:-

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

- SIPH without subapical reticulation …..4

2 SIPH mainly or wholly pale, sometimes darker apically. ANT III with 1-10 rhinaria. First tarsal segments with 3 hairs …..Macrosiphum euphorbiae

- SIPH wholly dark or somewhat paler in middle. ANT III with 11-50+ rhinaria. First tarsal segments with 5 hairs .....3

3 ANT III with 11-48 rhinaria. Pre-siphuncular sclerites and scleroites at bases of dorsal hairs weakly developed or absent .....Uroleucon sonchi

- ANT III with more than 50 rhinaria. Well developed pre-siphuncular sclerites and dark scleroites at bases of dorsal hairs .....Uroleucon sp. (Spain, BMNH colln)

4 ANT III with 3-36 rhinaria. ANT PT/BASE 7.0-11.4. Thoracic spiracular apertures much larger than abdominal ones …..Nasonovia ribisnigri

- ANT III with 0-2 rhinaria. ANT PT/BASE 2.1-5.5. Thoracic and abdominal spiracles similar in size …..go to key to polyphagous aphids

Hyparrhenia Poaceae

Hyparrhenia cymbaria [Sitobion sp. (Millar 1994)]

H. filipendula Rhopalosiphum maidis

H. hirta Schizaphis graminum; Sitobion africanum

H. rufa Hysteroneura setariae;

Sitobion africanum, graminis, [Sitobion sp. (Millar 1994)];

Tetraneura fusiformis

H. variabilis Pseudaphis sijui; Sipha flava; [Sitobion sp. (Millar 1994)]

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

Hypecoum Papaveraceae

Hypecoum erectum Lipaphis jungarica

H. parviflorum Acyrthosiphon glaucii

H. procumbens Aphis fabae, gossypii

Key to apterae on Hypecoum:-

- SIPH pale, with slight distal swelling, almost flangeless. R IV+V c.0.75 × HT II. ABD TERG 1 and 7 without marginal tubercles (MTu), which may however be present on ABD TERG 6. ABD TERG 8 with a median process .....Lipaphis jungarica

- Without that combination of characters .....go to key to aphids on Glaucium

Hypericum (including Ascyrum) Hypericacae

Hypericum aethiopicum Aphis chloris

H. alpinum Acyrthosiphon malvae; Aulacorthum solani

H. androsaemum Acyrthosiphon malvae;

Aphis chloris, gossypii, Aphis sp. (Stroyan 1984,124)

H. ×arnoldianum Macrosiphum euphorbiae; Myzus persicae

H. ascyron (incl. ssp. gebleri) Aphis hypericiphaga, hypericiradicis, spiraecola

H. balearicum Aphis chloris, gossypii

H. calycinum Aphis gossypii, hyperici, Aphis sp. (Stroyan 1984, 124);

Macrosiphum euphorbiae; Myzus persicae;

Neomyzus circumflexus

H. canadense Aphis gossypii; Myzus persicae

H. canariense = Webbia canariensis

H. caprifolium Aphis frangulae

H. cernuum Aphis gossypii, [Aphis sp. (Dutta & Gautam 1993)];

Myzus persicae

H. chinense = H. monogynum

H. crispum = H. triquetifolium

H. densiflorum = H. prolificum var. densiflorum

H. elatum see H. ×inodorum

H. elongatum Aphis chloris, [citrina (= A. chloris?)]

H. foliosum Aphis fabae

H. forrestii see H. patulum

H. frondosum Aphis hyperici

H. gebleri see H. ascyron

H. gentianoides Protaphis middletonii

H. grandifolium Aphis fabae

H. hircinum (incl. ssp. metroi) Aphis chloris, fabae, [Aphis sp. (Leonard 1972a)];

Aulacorthum solani; Macrosiphum euphorbiae;

Myzus persicae

H. hirsutum Aphis chloris, fabae; Aulacorthum solani

H. hookerianum [Aphis sp. (Leonard 1972a)]; Aulacorthum solani;

Myzus ornatus, persicae

H. x?hypericoides Aphis spiraecola

H. hyssopifolium Aphis chloris, [citrina]

H. × inodorum (incl. elatum) Aphis gossypii; Macrosiphum euphorbiae; Myzus persicae

H. kalmianum Aphis hyperici, mizzou

H. lanceolatum = H. revolutum

H. linarifolium Aphis chloris

H. maculatum Aphis chloris, fabae; Aulacorthum solani;

Macrosiphum rosae

H. metroi see H. hircinum

H. mitchellianum Hyalomyzus mitchellensis

H. monogynum Myzus ornatus, persicae

H. montanum Aphis chloris, fabae

H. oblongifolium Aphis gossypii; Myzus persicae

H. olympicum (incl. grandiflora, Aulacorthum solani; Myzus ornatus, persicae

polyphyllum)

H. patulum (incl. var. forrestii) Aphis chloris, gossypii, nasturtii; Aulacorthum solani;

Myzus ornatus, persicae; [Wahlgreniella nervata]

H. perforatum Aphis chloris, [citrina], craccivora, fabae, gossypii,

hypericiphaga, hypericiradicis,

[oenotherae (Leonard 1974)], spiraecola

Aulacorthum solani; [Brachunguis zawadovskii];

[Illinoia sp. (B.C., Canada; A. Jensen, aphidtrek.org)];

Macrosiphum euphorbiae; Myzus ornatus, persicae;

[Pergandeida polygonata Nevsky var. hyperici Rusanova

1942 (nomen nudum)]

H. polyphyllum see H. olympicum

H. prolificum Aphis hyperici; Hyalomyzus triangulatus

(= Myriandra prolifica)

H. prolificum var. densiflorum Hyalomyzus triangulatus; Macrosiphum euphorbiae;

Myzus ornatus

H. pulchrum Aulacorthum solani

H. quadrangulum see H. tetrapterum

H. revolutum Aphis gossypii; Aulacorthum solani;

Macrosiphum euphorbiae; Myzus ornatus, persicae;

Sitobion africanum

H. roeperianum Aphis chloris, gossypii

H. scabrum Aphis chloris, [citrina], craccivora, pavlovskii

H. tetrapterum (incl. Aphis chloris, fabae

“quadrangulum” cultivars)

H. tomentosum Aphis chloris

H. triquetrifolium Aphis chloris; Macrosiphum euphorbiae

H. uralum Aphis gossypii, nasturtii

Hypericum spp. Metopolophium darjeelingense

Key to apterae on Hypericum:-

1 Dorsal cuticle of head spiculose or strongly wrinkled, and ANT tubercles well developed with inner faces scabrous and steep-sided or apically convergent, or with rounded, convergent processes …..2

- Dorsal cuticle of head smooth or slightly wrinkled, and ANT tubercles absent, weakly developed or, if well developed, then with inner faces smooth and divergent …..4

2 SIPH clavate; swollen on distal 0.7-0.8, constricted subapically, and with narrower basal section. ANT PT/BASE 0.8-2.1. (Al. with secondary rhinaria on ANT IV and V) …..3

- SIPH tapering, cylindrical or clavate, but if clavate then without a subapical constriction, and with ANT PT/BASE 2.8-4.5. (Al. without secondary rhinaria on ANT IV and V)

…..go to key to polyphagous aphids, starting at couplet 5

3 ANT PT/BASE 1.5-2.1. Dorsal cuticle of head spinulose. SIPH often dusky to dark. (Al. with secondary rhinaria distributed III 19-28, IV 13-21, V 3-8)

…..Hyalomyzus mitchellensis

- ANT PT/BASE 0.8-1.0. Dorsal cuticle of head strongly wrinkled. SIPH pale. (Al. with secondary rhinaria distributed ANT III 11-19, IV 6-10, V 3-6) …..Hyalomyzus triangulatus

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

…..5

- SIPH without polygonal reticulation …..6

5 SIPH black. Dorsal abdomen with variably developed dark sclerotisation. Longest ANT hairs less than 0.5 × BD III …..Sitobion africanum

- SIPH pale. Dorsal abdomen without dark sclerotisation. Longest ANT hairs 0.6-1.0 × BD III

…..Macrosiphum euphorbiae

6 SIPH 0.2-0.7 × cauda …..7

- SIPH 0.8-2.5 × cauda …..9

7 Dorsal abdomen with dark cross-bands on ABD TERG 7 and 8 and irregular dark

sclerotisation of more anterior tergites. R IV without any accessory hairs. ANT 5-segmented

…..Aphis mizzou

- Dorsal abdomen without dark sclerotisation. R IV with 2 accessory hairs. ANT 5- or 6-segmented …..8

8 SIPH dark, 0.04-0.07 mm long, shorter than or not much longer than their basal widths. Cauda 0.11-0.15 mm long, with 5-7 hairs …..Aphis hyperici

- SIPH pale, sometimes darker towards apices, at least 0.10 mm long and twice as long as their basal widths. Cauda at least 0.20 mm long, with 6-11 hairs …..Aphis hypericiphaga*

9 ANT tubercles well developed. SIPH pale, 1.5-2.5 × cauda. ABD TERG 1 and 7 without marginal tubercles (MTu) …..10

- ANT tubercles absent or weakly developed. ANT PT/BASE 1.5-4.5. SIPH dark, 0.8-2.2 × cauda. ABD TERG 1 and 7 with MTu …..11

10 ANT PT/BASE 4.8-7.5. Femora without spinules. First tarsal segments with 3 hairs (1 sense peg) …..Acyrthosiphon malvae

- ANT PT/BASE 3.0-3.9. Femora with many small blunt spinules ventrally. First tarsal segments usually with 4 hairs (2 sense pegs)

…..Metopolophium darjeelingense

11 ABD TERG 2-4 or 2-6 as well as 1 and 7 with large, dome-like MTu …..12

- MTu only consistently present on ABD TERG 1 and 7 …..13

12 ANT PT/BASE 2.2-2.8. MTu present on ABD TERG 1-4 and 7 …..Aphis hypericiradicis*

- ANT PT/BASE 1.5-1.7. MTu present on all of ABD TERG 1-7 …..Aphis pavlovskii*

13 Cauda usually paler than SIPH, and bearing 4-8 hairs. Dorsum without dark markings. Longest hairs on ANT III 0.3-0.5 × BD III …..14

- SIPH and cauda both black; cauda with 4-25 hairs, but if 8 or less then either dorsal abdomen has a solid black shield or longest hairs on ANT III are more than 0.5 × BD III

…..go to key to polyphagous aphids, starting at couplet 24

14 Posterior hair on hind trochanter 0.37-0.53 × length of trochantro-femoral suture. ANT PT/BASE 1.5-2.1 …..Aphis chloris

- Posterior hair on hind trochanter 0.55-1.54 × length of trochantro-femoral suture. ANT PT/BASE 1.7-3.2 …..15

15 R IV+V 1.1-1.5 × HT II. (Al. without rhinaria on ANT IV) …..Aphis gossypii

- R IV+V 0.8-0.95 × HT II. (Al. with 2-6 rhinaria on ANT IV)

…..Aphis sp. (Stroyan 1984,124)

Hypnum Hypnaceae

Hypnum cupressiforme Jacksonia papillata; Muscaphis escherichi

Hypnum sp. Melaphis rhois

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

Hypochaeris (or Hypochoeris) Asteraceae

Hypochaeris achyrophorus Aphis fabae, picridicola; Brachycaudus helichrysi;

Macrosiphum euphorbiae; [Myzus certus];

Uroleucon cichorii, hypochoeridis

H. brasiliensis Uroleucon ambrosiae ssp. lizerianum

H. glabra Aphis hypochoeridis, picridicola;

Brachycaudus helichrysi; Uroleucon hypochoeridis

H. laevigata Uroleucon hypochoeridis

H. maculata Aphis hypochoeridis, [leontodontis];

Protaphis picridicola; Uroleucon cichorii, hypochoeridis

H. radicata Aphis fabae, gossypii, hypochoeridis, nasturtii,

picridicola, spiraecola;

Aulacorthum palustre, solani; Brachycaudus helichrysi;

Hyperomyzus carduellinus; Macrosiphum euphorbiae;

Myzus ascalonicus, cymbalariae, ornatus, persicae;

Nasonovia ribisnigri; Neomyzus circumflexus;

Protaphis [evansi], pseudocardui;

Trama caudata, troglodytes;

Uroleucon ambrosiae, cichorii, [grossum], hypochoeridis,

sonchi

H. uniflora Nasonovia ribisnigri;

Uroleucon cichorii, hypochoeridis, [picridis]

Hypochaeris (or Hypochoeris) [Acyrthosiphon ilka]; Aphis pernilleae;

spp. [Aulacorthum rufum]; Uroleucon malarguense

Key to apterae on Hypochaeris:-

1 Hind tarsi greatly elongated, more than 0.6 × hind tibiae. ANT PT/BASE less than 0.4. SIPH absent, or as pores …..2

- Hind tarsi normal. ANT PT/BASE more than 0.7. SIPH tubular …..3

2 SIPH absent. Eyes of only 3 facets …..Trama troglodytes

- SIPH present as pores on small cones. Eyes multifaceted …..Trama caudata

3 Cauda helmet-shaped or triangular, not longer than its basal width …..4

- Cauda tongue- or finger-shaped, much longer than its basal width …..6

4 Cauda helmet-shaped, with 4-6 hairs. SIPH smooth, pale, with a subapical annular incision. ANT PT/BASE 2.4-3.2. ANT III without rhinaria. Dorsum without dark markings. Spiracular apertures rounded. ABD TERG 1 and 7 without marginal tubercles (MTu)

…..Brachycaudus helichrysi

- Cauda triangular, with 7-19 hairs. SIPH imbricated, dark, without a subapical annular incision. ANT PT/BASE 0.8-1.9. ANT III often with rhinaria. Dorsum usually with dark sclerotisation. Spiracular apertures reniform. ABD TERG 1 and 7 with MTu …..5

5 ANT PT/BASE 1.5-2.1. Cauda with 6-12 hairs …..Aphis picridicola

- ANT PT/BASE 1.0-1.2 (-1.4). Cauda with 13-19 hairs …..Protaphis pseudocardui

6 ANT tubercles absent or weakly developed. ABD TERG 1 and 7 with MTu …..7

- ANT tubercles well developed. ABD TERG 1 and 7 without MTu …..9

7 Marginal hair on ABD TERG 1 is 0.14-0.6 × height of adjacent MTu. ANT PT/BASE 1.5-2.7. R IV+V 1.2-2.0 × HT II. (ANT usually 5-segmented) …..8

- Marginal hair on ABD TERG 1 is 0.7-1.8 × height of adjacent MTu. ANT PT/BASE 1.8-3.7. R IV+V 0.9-1.5 × HT II …..go to key to polyphagous aphids, starting at couplet 24

8 R IV+V 1.6-2.0 × HT II. Posterior hair on hind trochanter 0.2-0.3 × length of trochantro-femoral suture. SIPH 2.4-4.2 × their midlength diameters …..Aphis pernilleae

- R IV+V 1.2-1.6 × HT II. Posterior hair on hind trochanter 0.4-1.0 × length of trochantro-femoral suture. SIPH 3.5-7.1 × their midlength diameters …..Aphis hypochoeridis

9 Cuticle of head densely spiculose or nodulose, at least on ventral surface. ANT tubercles with inner faces scabrous or spiculose and parallel or apically convergent

…..go to key to polyphagous aphids, starting at couplet 5

- Cuticle of head smooth or with only sparse spinules. ANT tubercles with inner faces smooth and divergent or almost parallel …..10

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

…..11

- SIPH without a subapical zone of polygonal reticulation …..16

11 SIPH mainly pale, with reticulation consisting of few, large cells and extending over distal 0.13-0.20 of length. ANT III with 1-10 rhinaria. Dorsal abdomen without scleroites at base of hairs. First tarsal segments with 3 hairs …..Macrosiphum euphorbiae

- SIPH dark, with reticulation consisting of numerous small cells and extending over distal 0.16-0.43 of length. ANT III with 2-97 rhinaria. Dorsal abdomen with dark scleroites at base of hairs. First tarsal segments with 5 hairs …..12

12 Antesiphuncular sclerites absent or indistinct …..13

- Crescent-shaped antesiphuncular sclerites present …..15

13 Coxae pale. SIPH 1.0-1.35 × cauda …..Uroleucon ambrosiae

- Coxae dusky/dark (darker than trochanters). SIPH 1.4-2.2 × cauda .....14

14 R IV+V 0.7-0.9 × HT II, Cauda pale with 23-30 hairs …..Uroleucon sonchi

- R IV+V 1.1-1.3 × HT II. Cauda brown with 9-14 hairs …..Uroleucon malarguense

15 R IV+V 1.17-1.33 × HT II, SIPH 1.4-1.8 × cauda …..Uroleucon cichorii

- R IV+V 0.84-1.08 × HT II. SIPH 1.25-1.5 × cauda …..Uroleucon hypochoeridis

16 SIPH slightly but distinctly swollen on distal half, 1.1-1.5 × cauda which is constricted about 0.4 from base …..Hyperomyzus carduellinus

- SIPH tapering or cylindrical on distal half, 1.6-2.5 × cauda which is not constricted …..17

17 ANT III with 3-36 rhinaria, and with longest hairs 0.7-1.1 × BD III. ANT PT/BASE 7.0-11.4. Thoracic spiracles much larger than abdominal ones …..Nasonovia ribisnigri

- ANT III with 1-3 rhinaria, and with longest hairs less than 0.4 × BD III. ANT PT/BASE

4.2-5.2. Thoracic spiracles similar in size to abdominal ones …..Aulacorthum palustre

Hypocyrta see Nematanthus Gesneriaceae

Hypoestes Acanthaceae

Hypoestes phyllostachya Macrosiphum euphorbiae

Hyptis (including Mesosphaerum) Lamiaceae

Hyptis capitata Aphis gossypii; Hyalomyzus eriobotryae;

Sitobion mesosphaeri

H. mutabilis Sitobion mesosphaeri

H. pectinata Aphis spiraecola; Sitobion mesosphaeri

H. procumbens Sitobion mesosphaeri

H. radiata Sitobion mesosphaeri

H. rhomboidea Aphis gossypii

H. spicata Sitobion mesosphaeri

H. spicigera Aphis gossypii

H. suaveolens Sitobion mesosphaeri

H. verticillata Aphis spiraecola; Sitobion mesosphaeri

Key to apterae on Hyptis:-

1 Head densely spiculose with scabrous, convergent ANT tubercles. SIPH clavate, 2.5-2.7 × cauda. R IV+V 1.5-1.8 × HT II. (Al. with very numerous rhinaria on ANT III, IV and V)

…..Hyalomyzus eriobotryae

- Without that combination of characters …..2

2 SIPH dark except at bases, with zone of polygonal reticulation on subapical 0.16-0.25. ANT tubercles well developed, with smooth, divergent inner faces. ANT dark, much longer than body, with ANT PT/BASE 5.4-6.9 ….. Sitobion mesosphaeri

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

Hyssopus Lamiaceae

H. officinalis Aphis calaminthae; Aulacorthum solani;

Eucarazzia elegans

H. seravschanicus Uroleucon hyssopii

Key to apterae on Hyssopus:-

1 SIPH dark, with a distal zone of polygonal reticulation. ANT III with numerous (c.60) rhinaria distributed along most of its length …..Uroleucon hyssopii*

- SIPH pale or dark, without polygonal reticulation. ANT III with 0-12 rhinaria …..2

2 ANT tubercles weakly developed. ABD TERG 1 and 7 with marginal tubercles. SIPH dark, tapering, 0.10-0.16 × BL and 1.25-1.9 × cauda. ANT PT/BASE less than 2.5

….. Aphis calaminthae

- ANT tubercles well developed. ABD TERG 1 and 7 without marginal tubercles. SIPH pale, tapering or swollen distally, 0.18-0.36 × BL and 1.8-8.6 × cauda. ANT PT/BASE 3.0-5.5

…..3

3 SIPH strongly swollen on distal half, 5.5-8.6 × the triangular cauda, which bears 5 hairs. Alatiform apt. common with rhinaria distally on ANT III (-IV) …..Eucarazzia elegans

- SIPH tapering/cylindrical, 1.8-2.6 × the tongue-shaped cauda which bears 6-8, usually 7, hairs. ANT III usually with 1-3 small rhinaria near base …..Aulacorthum solani

Hysterionica Asteraceae

Hysterionica jasionoides Uroleucon bereticum, essigi, macolai

Key to separate these three species:-

1 First tarsal segments with 3 hairs. ANT III (of aptera) with 2-8 secondary rhinaria

…..Uroleucon essigi

- First tarsal segments with 3-5 hairs. ANT III (of aptera) with 7-35 secondary rhinaria …..2

2 ANT III (of aptera) with 15-35 secondary rhinaria distributed over almost the whole length of the segment. Scleroites at bases of dorsal hairs pale, inconspicuous

…..Uroleucon bereticum

- ANT III (of aptera) with 7-15 secondary rhinaria on basal half of segment. Dark scleroites present at bases of dorsal hairs …..Uroleucon macolai

Hystrix Poaceae

Hystrix patula Metopolophium dirhodum

(= Asperella hystrix)

(or use key to apterae of grass-feeding aphids under Digitaria)

Iberis Brassicaceae

Iberis affinis = I. amara

I. amara Aphis gossypii; Brevicoryne brassicae; Lipaphis erysimi;

Myzus ornatus, persicae

I. sempervirens Myzus cymbalariae

I. umbellata Myzus persicae

Iberis sp. Macrosiphum euphorbiae

Use key to apterae on Brassica.

Ibicella Martynaceae

Ibicella lutea Nasonovia ribisnigri

Iboza see Tetradenia Lamiaceae

Ichnanthus Poaceae

Ichnanthus pallens Pseudoregma panicola

Ichnocarpus Apocynaceae

Ichnocarpus frutescens Aphis gossypii, spiraecola

Use key to polyphagous aphids.

Ilex Hollies Aquifoliaceae

Ilex aquifolium Aphis aurantii, fabae, ilicis; Aulacorthum solani;

Illinoia lambersi; Macrosiphum euphorbiae, rosae

I. berteroi Aphis aurantii, spiraecola

I. canariensis see perado

I. colchica Aphis ilicis

I. cornuta (incl. var. burfordii) Aphis (Toxoptera) aurantii; Aulacorthum solani;

[Eutrichosiphum tattakanum];

Macrosiphum euphorbiae, rosae

I. crenata Aphis (Toxoptera) aurantii

I. cubana Aphis (Toxoptera) aurantii

I. glabra Macrosiphum rosae

I. hanceana [Aiceona titabarensis]

I. integra Macrosiphum rosae

I. latifolia Aulacorthum solani

I. macfadyenii Aphis (Toxoptera) aurantii

I. macropoda Pseudomegoura magnoliae

I. nipponica [Anoecia ilicicola Sorin 1999; vagrant sexuparae?]

I. opaca Aphis (Toxoptera) aurantii

I. paraguayensis Aphis (Toxoptera) aurantii, citricidus

I. pedunculosa Aphis aurantii, odinae

I. perado (incl. canariensis) Aphis aurantii, ilicis

I. rotunda Aphis (Toxoptera) aurantii; Aulacorthum solani;

Myzus persicae; Sinomegoura citricola

I. rugosa Aphis (Toxoptera) aurantii

I. serrata (incl. var. sieboldii) Aphis celastrii (= spiraecola?); Pseudomegoura magnoliae;

Ryoichitakahashia prunifoltae

I. turquinensis = I. cubana

I. verticillata Macrosiphum rosae

I. vomitoria Aphis (Toxoptera) aurantii

I. wrightii (?) Aphis (Toxoptera) aurantii

Ilex spp. [Myzocallis polychaeta]; Myzus ornatus;

[Pseudothoracaphis himachali]; [Taoia indica]

Key to Ilex-feeding aphids:-

1 Cauda pale, shorter than its basal width, less than 0.3 of length of black SIPH. Antennal hairs long and fine, mostly 3-4 × basal diameter of ANT III. ANT III of aptera with secondary rhinaria on distal 0.5-0.7 .....Ryoichitakahashia prunifoltae

- Cauda pale or dark, longer than its basal width, more than 0.3 of length of SIPH. Antennal hairs less than 3 × basal diameter of ANT III, which in aptera has rhinaria either absent or only on basal 0.3 .....2

2 Body broadly spindle-shaped. SIPH with an apical zone of polygonal reticulation .....3

- Body oval or pear-shaped. SIPH without polygonal reticulation .....5

3 SIPH clearly swollen on distal half, proximad to the reticulated part. Longest hairs on ANT III less than 0.5 × basal diameter of segment .....Illinoia lambersi

- SIPH cylindrical or tapering on distal half. Longest hairs on ANT III more than 0.5 × basal diameter of segment .....4

4 Head black, like SIPH. Dark sclerites present anteriad and posteriad to SIPH, the antesiphuncular sclerite being crescent-shaped .....Macrosiphum rosae

- Head and SIPH pale or dusky. No dark ante- and postsiphuncular sclerites

.....Macrosiphum euphorbiae

5 Antennal tubercles well developed, their inner faces parallel or convergent in dorsal view

.....6

- Antennal tubercles poorly developed .....10

6 Legs of aptera black except at bases of femora .....Pseudomegoura magnoliae

- Legs of aptera with at least tibiae mainly pale .....7

7 Cauda black, and SIPH dark on distal halves .....Sinomegoura citricola

- Cauda pale, and SIPH pale or only dark at apices .....8

8 Antennal tubercles with inner faces parallel in dorsal view (fig. 42J). ANT III of aptera with a small secondary rhinarium near base .....Aulacorthum solani

- Antennal tubercles with inner faces convergent in dorsal view (e.g., fig. 42I). ANT III of aptera never with a secondary rhinarium .....9

9 Dorsal abdomen with an intersegmental pattern of dark ornamentation. ANT PT/BASE

less than 2.5. SIPH tapering, with a shallow S-curve, and coarsely imbricated

.....Myzus ornatus

- Dorsal abdomen without dark ornamentation. ANT PT/BASE more than 3. SIPH slightly swollen on distal half .....Myzus persicae

10 SIPH 0.4-0.6 × cauda. ABD TERG 8 with 5-12 hairs .....Aphis odinae

- SIPH 0.9-1.7 × cauda. ABD TERG 8 with 2-5 hairs .....11

11 Stridulatory ridges present on abdominal sternites 5 and 6, and evenly spaced stridulatory peg-like hairs on hind tibiae (fig. 122). ANT PT/BASE 3.5-5.0 Dorsal abdominal markings if present confined to ABD TERG 7 and 8. Alata with media of forewing once-branched

.....Aphis (Toxoptera) aurantii

- Stridulatory apparatus absent. ANT PT/BASE 2.1-3.2 Dark, broken sclerites or bands usually present on ABD TERG 1-8. Alata with media of forewing twice-branched .....12

12 Longest hair on ANT III usually more than 2 × basal diameter of segment. ABD TERG

2-5 as well as 1 and 7 often with marginal tubercles .....Aphis ilicis

- Longest hair on ANT III rarely more than 2 × basal diameter of segment. ABD TERG 2-5 less frequently with small marginal tubercles .....13

13 Dorsum with variable dark markings, usually consisting of at least dark sclerotic bands on pronotum, mesonotum and ABD TERG 7 and 8, and small dark marginal sclerites (fig. 121R); often also with small dark sclerites scattered over other abdominal tergites. Cauda without any constriction and bearing 11-24 hairs .....Aphis fabae

- Pronotum, mesonotum and ABD TERG 7 and 8 without dark sclerotic bands and marginal sclerites not deeply pigmented. Cauda usually with a constriction about one third from base, and bearing 6-12 hairs (fig 121T) .....Aphis spiraecola

Iliamna Malvaceae

Iliamna rivularis Uroleucon eoessigi

Illicium Schisandraceae

Illicium anisatum Aphis (Toxoptera) aurantii; Polytrichaphis fragilis;

[Semiaphis heraclei];

I. religiosum Aphis (Toxoptera) aurantii

I. verum Polytrichaphis illicius

Key to apterae on Illicium:-

1 Dorsal body hairs multiplied (ABD TERG 1-4 each with at least 8 spino-pleural hairs and 1 marginal pair). SIPH dusky, or dark on distal half only. Cauda with 6-11 hairs. No stridulatory apparatus …..2

- Dorsal body hairs not multiplied (ABD TERG 1-4 each with only 1 spinal and 1 marginal pair). SIPH black. Cauda with 10-26 hairs. Stridulatory apparatus present

…..Aphis (Toxoptera) aurantii

2 Dorsal body hairs very long, fine and numerous, those on ABD TERG 3 maximally 3.5-4.5 × ANT BD III. ABD TERG 8 with 9-13 hairs. SIPH uniformly dusky

…..Polytrichaphis fragilis

- Dorsal body hairs shorter and less numerous, those on ABD TERG 3 not more than 2.5 × ANT BD III. ABD TERG 8 with 4-5 hairs. SIPH dark basally and pale distally

…..Polytrichaphis illicius*

Impatiens Balsaminaceae

Impatiens balfourii Impatientinum asiaticum ssp. dalhousiense

I. balsamina Aphis [cephalanthi], fabae, gossypii, impatientis, nasturtii,

spiraecola;

Aulacorthum solani; [Brachycaudus helichrysi];

Eumyzus impatiensae;

Impatientinum asiaticum, asiaticum ssp. dalhousiense,

impatiens;

Macrosiphum euphorbiae;

Myzus [formosanus], ornatus, persicae;

Sinomegoura citricola

I. bicornuta Impatientinum asiaticum ssp. dalhousiense, impatiens

I. biflora see I. capensis

I. capensis (incl. biflora, fulva) Aphis [cephalanthi], fabae, impatientis, nasturtii,

Aphis sp. (Ontario, BMNH collection),

[Aphis sp. (Leonard 1968)];

Catamergus fulvae

Macrosiphum euphorbiae, impatientis, [pallidum];

Uroleucon impatiensicolens

I. ecalcarata Macrosiphum pallidum (or impatientis?)

I. edgeworthii Impatientinum asiaticum

I. falcifer (= I. serrata) Aphis spiraecola; Epipemphigus marginalis

I. fulva see I. capensis

I. furcillata Impatientinum impatiens

I. glandulifera Aphis fabae, impatiphila, impatiradicis, nasturtii,

Aphis sp. (Ontario, BMNH collection) ;

Eumyzus indicus;

Impatientinum asiaticum, balsamines, impatiens;

Myzus ornatus

I. grandiflora (?) Aphis fabae

I. holstii = I. walleriana

I. nolitangere Aleurodaphis impatientis; Aphis fabae, gossypii;

Epipemphigus niisimae; Eumyzus gallicola, impatiensae;

Hydronaphis impatiens;

Impatientinum asiaticum, balsamines, impatiens

Semiaphis moiwaensis, nolitangere

I. pallida Aphis impatientis; Catamergus fulvae;

Macrosiphum impatientis, pallidum;

Uroleucon impatiensicolens

I. parviflora Aphis fabae, gossypuii, nasturtii;

Impatientinum asiaticum, [balsamines]; Myzus persicae

I. purpureo-violacea Aphis fabae, gossypii, spiraecola; Aulacorthum solani;

Macrosiphum euphorbiae; Myzus ornatus

I. roylei = I. glandulifera

I. scabrida Aphis fabae; Eumyzus indicus;

Impatientinum asiaticum, asiaticum ssp. dalhousiense

I. sultani Aulacorthum solani; Impatientinum balsamines;

Myzus persicae

I. textori Aleurodaphis impatientis; Eumyzus impatiensae;

Hydronaphis impatiens;

Impatientinum balsamines, impatiens

I. walleriana Aphis fabae, [Aphis sp. (Leonard 1972a)];

Myzus ornatus, persicae; Neomyzus circumflexus

Impatiens sp. [Cryptomyzus galeopsidis; (Germany – aphidtrek.org]

Key to apterae on Impatiens:-

1 Body aleyrodiform; flattened, elongate oval, with a crenulate margin of wax glands. Cauda knobbed, anal plate bilobed …..Aleurodaphis impatientis.

- Body of more normal aphid form, and other characters do not apply …..2

2 ANT 5-segmented, less than 0.25 × BL, with ANT PT/BASE less than 0.5. Eyes 3-faceted, SIPH absent. Dorsal abdomen with paired spinal and pleural wax gland plates

…..Epipemphigus sp(p).

- ANT usually 6-segmented, more than 0.45 × BL, with ANT PT/BASE more than 1. Eyes multi-faceted, SIPH present. No dorsal wax gland plates …..3

3 Dorsum with extensive dark sclerotisation …..4

- Dorsum membranous, or with only localised sclerotisation …..8

4 Head spiculose. Cauda short and dark, much less than 2 × its basal width in dorsal view. SIPH tapering or slightly swollen on distal half, with a large flange …..5

- Head not spiculose. Cauda pale, finger-like, at least 2 × its basal width. SIPH tapering or cylindrical on distal half, usually with some subapical reticulation, and with a small flange

…..6

5 SIPH more than 3 × cauda, and slightly swollen on distal half. ANT PT/BASE 4.7-5.5

.....Hydronaphis impatiens

- SIPH tapering with no swelling, 1.6-2.3 × cauda. ANT PT/BASE 2.6-3.7

.....Eumyzus indicus*

6 Apices of tibiae pale, and apices of femora pale or dusky. ANT III with 8-17 secondary rhinaria, IV with 1-7 and V with 0-7. R IV+V 0.65-0.77 × HT II. SIPH 0.64-0.77 × head width across (and including) eyes. Height of ANT tubercles much less than 0.5 × length of ANT I along inner side …..Impatientinum balsamines

- Apices of tibiae dark or black, distal parts of femora black. ANT III with 1-11 secondary rhinaria, IV and IV with 0. R IV+V 0.84-1.0 × HT II. SIPH at least 0.8 × head width across eyes. Height of ANT tubercles about 0.5 × length of ANT I along inner side …..7

7 Basal part of SIPH with nodulose imbrication, and post-siphuncular sclerite spiculose (Fig.33a). SIPH 0.8-0.9 × head width across eyes. Spiracular sclerites of abdominal segments 1 and 2 very close, often contiguous (Fig.33c) …..Impatientinum asiaticum

- Basal part of SIPH and post-siphuncular sclerite quite smooth (Fig.33b). SIPH 0.9-1.2 × head width across eyes. Spiracular sclerites on abdominal segments 1 and 2 distinctly separated (Fig.33d) …..Impatientinum impatiens

8 SIPH very small, 0.24-0.45 × cauda, with apices curved inwards and flangeless (e.g. Fig.33e)

…..9

- SIPH at least 0.6 × cauda, and usually with at least a small flange …..10

9 SIPH about as long as their basal widths, 0.2-0.3 × cauda …..Semiaphis nolitangere

- SIPH c.1.5 × their basal widths, and 0.33-0.45 × cauda …..Semiaphis moiwaensis

10 Head densely spiculose, at least ventrally …..11

- Head not spiculose …..13

11 Dorsal hairs all short and blunt, shorter than ANT BD III, and without tuberculate bases or pigmented scleroites. SIPH smooth or variously imbricated

…..go to key to polyphagous aphids, starting at couplet 5

- Dorsal hairs much longer than ANT BD III, rather spine-like, with acute apices, and placed on lightly or heavily pigmented scleroites (e.g. Fig.33f). SIPH with close-set nodulose imbrication …..12

12 Dorsal hairs maximally 1.5-2.2 × ANT BD III, arising from small lightly pigmented, flat scleroites. SIPH 0.8-1.0 × cauda, which is longer than its basal width

…..Eumyzus gallicola

- Dorsal hairs maximally 2.2-3.3 × ANT BD III, arising from large, often heavily pigmented, somewhat domed scleroites (Fig.33f). SIPH 1.6-2.3 × cauda, which is not or hardly longer than its basal width in dorsal view …..Eumyzus impatiense

13 ANT longer than BL. ANT tubercles well developed, divergent. SIPH with subapical polygonal reticulation (if rather indistinct, then SIPH are thin with pale basal half and dark distal half). ABD TERG 1 and 7 without marginal tubercles (MTu). ANT III with secondary rhinaria …..14

- ANT shorter than BL. ANT tubercles weakly developed. SIPH without subapical polygonal reticulation. ABD TERG 1 and 7 with MTu. ANT III (or fused III+IV) without rhinaria

…..18

14 SIPH rather thin, about equal in length to cauda, with pale basal half and dark distal half , and with 1-4 rather indistinct rows of polygonal cells near apex (Fig.33g)

…..Catamergus fulvae

- SIPH tapering or cylindrical, longer than cauda, with a least 4-5 subapical rows of well-defined polygonal cells; entirely pale, entirely dark, or mainly dark with pale base …..15

15 SIPH dark, 1.2-1.4 × cauda, with reticulation extending over distal 0.3-0.4 of length. First tarsal segments with 5 hairs …..Uroleucon impatiensicolens

- SIPH pale or dark, 1.4-2.2 × cauda, with reticulation extending over distal 0.13-0.23 of length. First tarsal segments with 3 hairs …..16

16 SIPH pale, or only dusky towards apices …..Macrosiphum euphorbiae

- SIPH mainly dark,sometimes paler at base …..17

17 ANT III (except at base) and tibiae black …..Macrosiphum pallidum

- ANT III mainly pale (except for rhinariated section and apex), tibiae with pale middle section …..Macrosiphum impatientis

18 ABD TERG 2-4, as well as 1 and 7, with low, conical or hemispherical MTu …..19

- ABD TERG 2-4 without or only very sporadically with MTu …..20

19 Longest hairs on ANT III 0.4-0.7 × BD III. Posterior hair on hind trochanter 0.2-0.5 × length of trochantro-femoral suture. SIPH 1.2-1.7 × cauda and 1.1-1.5 × ANT III

…..Aphis impatiphila

- Longest hairs on ANT III 1.2-1.7 × BD III. Posterior hair on hind trochanter 1.1-1.4 × length of trochantro-femoral suture. SIPH 1.0-1.1 × cauda and 0.9-1.0 × ANT III

…..Aphis impatiradicis

20. R IV+V 0.7-0.9 × HT II. Cauda dark like SIPH and bearing 4-6(-7) hairs

…..Aphis impatientis

- R IV+V 0.9-1.4 × HT II. Cauda either not dark like SIPH or bearing more than 7 hairs

…..21

21. SIPH 0.67-1.0 × cauda, which bears 13-18 hairs. R IV+V 1.2-1.4 × HT II

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

- SIPH (0.8-) 1.0-2.5 × cauda, which bears 4-24 hairs, but if more than 12 hairs and/or siphunculi are shorter than cauda, then R IV+V 0.9-1.2 × HT II

…..go to key to polyphagous aphids, starting at couplet 24

Imperata Poaceae

Imperata arundinacea = I. cylindrica

I. cylindrica (incl. var. major) Anoecia corni, [radiciphaga]; Aphis gossypii;

Ceratovacuna [beijingensis], graminum, [imperata],

lanigera, nekoashi;

Forda marginata, orientalis, pawlowae;

Geoica lucifuga; Hysteroneura setariae;

Melanaphis zhanhuaensis; Sipha maydis;

Tetraneura multisetosa, fusiformis, radicicola,

triangula, yezoensis

I. koenigii = I. cylindrica

Imperata sp. Ceratovacuna panici

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

Indigofera Fabaceae

Indigofera anil = I. suffruticosa

I. arrecta Aphis craccivora

I. astragalina Aphis gossypii

I. australis Acyrthosiphon pisum

I. cassioides [Macrosiphum sp.; Leonard 1972a]

I. colutea Aphis gossypii

I. comosa Aphis craccivora

I. conjugata Aphis gossypii

I. dendroides Aphis gossypii

I. dosua [Macrosiphum sp.; Leonard 1972a]; Megoura dooarsis

I. emarginella Aphis craccivora

I. enneaphylla = I. linnaei

I. gerardiana = I. heterantha

I. heterantha Acyrthosiphon pisum; Cavariella himachali;

[Macrosiphum sp.; Leonard 1972a];

Megoura dooarsis, [Megoura sp. (India)]; Myzus persicae

I. hirsuta Aphis gossypii, spiraecola

I. hirta (?) Aphis craccivora, gossypii

I. linnaei Aphis craccivora

I. melanadenia Aphis craccivora

I. nigritana Aphis gossypii

I. nummulariifolia Aphis gossypii

I. oblongifolia Aphis craccivora

I. pilosa Aphis gossypii

I. prieureana Aphis gossypii

I. pseudotiuctoria Aphis craccivora, [indigoferae]

I. pulchella = I. cassioides

I. spicata Aphis craccivora; Pterasthenia albata

I. splendens Acyrthosiphon pisum

I. subulata = I. trita ssp. subulata

I. suffruticosa Aphis craccivora

I. teysmanni = I. zollingeriana

I. tinctoria Aphis craccivora

I. trita Aphis craccivora

I. trita ssp. subulata Aphis gossypii; Microparsus brasiliensis

I. zollingeriana Aphis craccivora; Megoura dooarsis, lespedezae

Indigofera spp. Aphis (Toxoptera) aurantii; Anomalosiphum indigoferae;

Neomyzus circumflexus; Nudisiphon folisacculata;

Key to apterae on Indigofera:-

See Blackman & Eastop (2000) for an illustrated key to apterae of common aphids on indigo.

1 SIPH as very short, broad, pigmented cones. Cauda shaped like an arrowhead in dorsal view. Anal plate bilobed …..Pterasthenia albata

- SIPH tubular. Cauda either broad with a distinct median stylus, triangular or tongue- or finger-shaped. Anal plate entire …..2

2 SIPH with a subapical ring of hairs with expanded apices. ABD TERG 8 with hair-bearing backwardly directed processes. Cauda broad with a median stylus

…..Anomalosiphum indigoferae

- SIPH without hairs. ABD TERG 8 without processes. Cauda tongue-shaped, or triangular with a curved, horn-like apex …..3

3 SIPH dark, at least on distal half …..4

- SIPH pale, sometimes darker at apex …..11

4 Head spiculose. SIPH clavate, dark on swollen distal part, paler on about distal 0.4. (Al. with black-bordered wing veins) …..Microparsus brasiliensis

- Head without spicules. SIPH wholly dark, or paler only at base …..5

5 ANT longer than BL. ANT tubercles well-developed, with divergent inner faces. ANT III with 1 or more rhinaria near base. SIPH slightly swollen in middle. Cauda long, pale and finger-like …..6

- ANT shorter than BL. ANT tubercles small or undeveloped. ANT III without rhinaria. SIPH cylindrical, tapering or swollen on distal part. Cauda pale or dark, tongue-shaped …..7

6. Longest hairs on ANT III more than 0.5 × BD III. ANT mainly black, and legs with large sections of femora and tibiae black. SIPH wholly dark …..Megoura lespedezae

- Longest hairs on ANT III less than 0.5 × BD III. ANT and legs variably pigmented but usually mainly pale. SIPH usually paler at base …..Megoura dooarsis

7 ANT PT/BASE 1.0-1.4. SIPH flangeless, clavate. ABD TERG 8 with a thumb-like process. ABD TERG 1 and 7 without marginal tubercles (MTu) …..Cavariella himachali*

- ANT PT/BASE 1.9-5.0. SIPH tapering or cylindrical, with a flange. No process on ABD TERG 8. ABD TERG 1 and 7 with MTu …..8

8 ANT PT/BASE 3.5-5.0. Cauda with 10-26 hairs. Stridulatory apparatus present

…..Aphis (Toxoptera) aurantii

- ANT PT/BASE 1.9-3.4. Cauda with 4-12(-15) hairs. No stridulatory apparatus …..9

9 Dorsum usually with an extensive black shield …..Aphis craccivora

- Dorsum without any dark markings …..10

10 Cauda paler than SIPH, and bearing 4-7 hiars. Longest hind femoral hairs only 0.4-0.7 × diameter of trochantro-femoral suture …..Aphis gossypii

- Cauda as dark as SIPH, and bearing 7-15 hairs. Longest hind femoral hairs more than 0.7 × diameter of trochantro-femoral suture …..Aphis spiraecola

11 SIPH tapering or cylindrical and attenuated distally, thinner than hind tibiae at their respective midlengths. Head with well-developed, divergent ANT tubercles. ANT III with 1-5 rhinaria near base …..Acyrthosiphon pisum

- SIPH tapering or somewhat swollen on distal part, thicker than hind tibiae at midlength. Head either without ANT tubercles or these have steep-sided, scabrous inner faces. ANT III without rhinaria …..12

12 SIPH flangeless. Head without ANT tubercles. Dorsal hairs pointed. Cauda triangular, with a curved, horn-like apex …..Nudisiphon folisacculata

- SIPH with a flange. Head spiculose with steep-sided, apically convergent ANT tubercles. Dorsal hairs short and blunt. Cauda tongue-shaped …..13

13 Dorsum with extensive dark markings, including a roughly horseshoe-shaped dorsal abdominal patch and paired large dark patches on thorax. SIPH not clavate. R IV+V 1.2-1.7 × HT II .....Neomyzus circumflexus

- No dark dorsal markings. SIPH slightly clavate. R IV+V 0.9-1.1 × HT II …..Myzus persicae

Indocalamus Poaceae

Indocalamus tessellatus Ceratovacuna angusticorna; Glyphinaphis bambusae; Pseudoregma panicola

Indocalamus sp. Ceratovacuna nekoashi

Key to apterae on Indocalamus:-

1 Head of aptera without frontal horns. Dorsal and marginal body hairs thick and

spine-like, and usually long .....Glyphinaphis bambusae

- Head of aptera with a pair of forwardly-directed frontal horns. Body hairs short, or if long then fine .....2

2 ABD TERG 1-6 without spinal wax glands .....3

- ABD TERG 1-6 with spino-pleural as well as marginal wax glands .....4

3 Head without wax gland plates between eyes. SIPH without hairs

..... Ceratovacuna nekoashi

- Head with one pair of wax gland plates between eyes, each composed of 2-4 facets. SIPH with 5-8 small finely pointed hairs .....Ceratovacuna atrovirensa*

4 ABD TERG 1-6 with very well-developed spinal, pleural and marginal series of wax glands, the spinal and marginal ones having numerous facets

.....Ceratovacuna angusticorna*

- ABD TERG 1-6 with spinal and marginal wax glands variably developed but never with more than 6 facets, and without pleural wax glands .....Pseudoregma panicola

(or try key to aphids on Bambusa)

Indosasa Poaceae

Indosasa shibataeaoides Ceratovacuna silvestrii

Inga Fabaceae

Inga edulis Aphis (Toxoptera) aurantii

I. laurina Macrosiphum salviae

I. vera Macrosiphum salviae

Key to apterae on Inga:-

- SIPH with a subapical zone of polygonal reticulation. Hind tibiae and SIPH entirely or mainly dark. R IV+V 1.25-1.55× HT II. Dorsal abdomen usually with a central black patch

.....Macrosiphum salviae

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

Inula Asteraceae

Inula acaulis Brachycaudus sakicinae

I. aspera Brachycaudus salicinae; Uroleucon inulicola

I. bifrons Uroleucon bifrontis

I. britannica Aphis fabae, [anuraphoides];

Brachycaudus cardui, helichrys, salicinae; Dysaphis inulae;

Ovatus inulae;

Protaphis sp.(Czech Republic, BMNH collection);

Uroleucon inulicola, pulicariae

I. cappa Aphis aurantii, gossypii; Brachycaudus helichrysi;

Indomasonaphis anaphalidis, inulae;

Myzus ornatus, persicae; [Subovatomyzus leucosceptri];

Uroleucon budhium, compositae

I. caspica Brachycaudus salicinae;

[Protaphis sp. (Kadyrbekov & Aoitzhanova 2005b)];

Uroleucon pulicariae, [Uroleucon sp. (Kadyrbekov &

Aoitzhanova 2005b)]

I. conyza Capitophorus [hippophaes], inulae; Ovatus inulae;

Uroleucon inulae (?), pulicariae

I. cuspidata Aphis nerii, spiraecola; Indomasonaphis anaphalidis, inulae

I. dysenterica = Pulicaria dysenterica

I. ensifolia Aulacorthum solani; Brachycaudus helichrysi, salicinae;

Uroleucon ensifoliae, inulicola

I. germanica [Aphis elatior]; Brachycaudus helichrysi, salicinae

I. grandiflora = I. orientalis

I. grandis = I. orientalis

I. graveolens = Dittrchia graveolens

I. helenium Aphis gossypii; Brachycaudus cardui, helichrysi, salicinae;

Capitophorus inulae, pakansus; Myzus persicae;

Ovatus inulae; [Trama troglodytes]; Uroleucon inulicola

I. hirta Brachycaudus helichrysi, salicinae; Capitophorus inulae;

Uroleucon inulicola

I. hookeri Capitophorus inulae

I. japonica [Aphis helianthemi ssp. obscura];

[Macrosiphoniella sanborni]

I. macrophylla = I. orientalis

I. magnifica Brachycaudus cardui, salicinae; Capitophorus pakansus

I. oculus-christi Brachycaudus helichrysi, salicinae

I. orientalis Brachycaudus cardui, helichrysi, salicinae;

Capitophorus [formosartemisiae], pakansus

I. pilosa (?) Brachycaudus helichrysi

I. racemosa Myzus persicae

I. rigida Brachycaudus helichrysi; Uroleucon inulicola

I. royleana Brachycaudus helichrysi; Capitophorus pakansus

I. rubricaulis Uroleucon fuscaudatum

I. salicina Brachycaudus helichrysi, salicinae; Capitophorus inulae;

Myzus persicae;

Uroleucon inulicola, pulicariae, [Uroleucon sp. (Kadyrbekov

2014f)]

I. spiraeifolia [Aphis plantaginis of Theobald (1927)]; Capitophorus inulae;

[Protaphis sp. (Holman & Pintera 1981)];

Uroleucon inulae (?), inulicola

I. squarrosa = I. spiraeifolia

I. stricta (incl. vrabelyiana) Brachycaudus helichrysi, salicinae;

Uroleucon ensifoliae, inulicola, pulicariae

I. telephium (?) Uroleucon inulae (?)

I. thapsoides Uroleucon elbursicum

I. verbascifolia Uroleucon dalmaticum

I. viscosa = Dittrichia viscosa

I. × weberi Brachycaudus helichrysi

Inula spp. [Brachycaudus bicolor]; [Capitophorus gynoxanthus]

Key to apterae on Inula and Dittrichia:-

1 SIPH dusky or dark over at least half of length, with a distal zone of reticulation comprising numerous (more than 100) small polygonal cells …..2

- SIPH pale or dark without polygonal reticulation, or pale with distal reticulation comprising fewer, larger cells …..11

2 R IV+V 1.85-3.01 × HT II …..3

- R IV+V 1.05-1.70 × HT II …..7

3 R IV+V 2.05-2.92 × ANT BASE VI …..4

- R IV+V 1.4-2.0 × ANT BASE VI …..5

4 SIPH dusky, basally almost concolorous with body, 0.27-0.37 × BL. Scleroites at bases of dorsal hairs pale and indistinct. Cauda with 11-22 hairs …..Uroleucon inulae

- SIPH entirely dark, much darker than body, 0.34-0.42 × BL. Scleroites at bases of dorsal hairs dark. Cauda with 19-28 hairs …..Uroleucon elbursicum*

5 R IV+V with about 30 accessory hairs and with the lateral pair of primary (subapical) hairs much longer than all the others …..Uroleucon bifrontis*

- R IV+V with 8-10 accessory hairs, and with all primary and accessory hairs of similar length

…..6

6 ANT III with 8-31 rhinaria. SIPH reticulated on distal 0.20-0.27 of length

…..Uroleucon dalmaticum

- ANT III with 32-72 rhinaria. SIPH reticulated on distal 0.12 –0.21 of length

…..Uroleucon budhium

7 Cauda dark like SIPH and distal parts of femora …..8

- Cauda much paler than SIPH and distal parts of femora …..10

8 R IV+V 1.5-1.7 × HT II …..Uroleucon fuscaudatum

- R IV+V 1.08-1.4 × HT II …..9

9 First tarsal segments with 3 (occasionally 4) hairs. Cauda tapering to a rounded apex

…..Uroleucon ensifoliae

- First tarsal segments with 5 (occasionally 4) hairs. Cauda tapering to a narrowly acute apex

…..Uroleucon compositae

10 SIPH 0.23-0.28 × BL, and 1.3-1.8 × cauda. R IV+V 1.14-1.36 × HT II

…..Uroleucon pulicariae

- SIPH 0.32-0.4 × BL, and 1.8-2.4 × cauda. R IV+V 1.25-1.65 × HT II

…..Uroleucon inulicola

11 Dorsal hairs long (more than 50 μm), with capitate or at least slightly expanded apices, and usually with tuberculate bases …..12

- Dorsal hairs shorter with blunt or pointed apices, and without tuberculate bases …..15

12 SIPH rather strongly clavate (Fig.34a). BL 3.4-4.8 mm ….. Indomasonaphis anaphalidis

- SIPH cylindrical on distal part, or very weakly clavate. BL 1.3-3.4 mm …..13

13 BL 2.8-3.4 mm. SIPH 0.25-0.3 × BL, 1.8-2.0 × cauda, which bears about 24-26 hairs. R IV+V with 16-18 accessory hairs. First tarsal segments with 5 hairs

…..Indomasonaphis inulae

- BL 1.3-2.2 mm. SIPH very long and thin, 0.31-0.4 × BL and 4-6 × cauda, which bears 5-7 hairs. RIV+V with 2 accessory hairs. First tarsal segments with 3 hairs …..14

14 ANT III with 2-5 long capitate hairs, as long as or longer than BD III. ABD TERG 1-4 each with 16-28 capitate hairs, arranged in spinopleural and marginal groups on large tubercles, the longest hairs being 3-4 × ANT BD III (Fig.34b). R IV+V 2.2-2.5 × HT II

…..Capitophorus pakansus

- ANT III with very short hairs, 0.2-0.3 × BD III. ABD TERG 1-4 each with 12-14 capitate hairs, the longest 2-3 × ANT BD III (Fig.34c). R IV+V 1.5-1.8 × HT II

…..Capitophorus inulae

15 Cauda helmet-shaped or bluntly triangular, not or hardly longer than its basal width in dorsal view …..16

- Cauda tongue-shaped, much longer than its basal width …..20

16 ANT PT/BASE 0.9-1.1. Cauda bluntly triangular with 14-20 hairs. ABD TERG 7 with marginal tubercles (MTu). Spiracular apertures reniform

….. Protaphis sp. (Czech Republic, BMNH collection, leg. D. Hille Ris Lambers)

- ANT PT.BASE 2.3-5.1. Cauda helmet-shaped, with 4-8 hairs. ABD TERG 7 without MTu. Spiracular apertures reniform or rounded …..17

17 SIPH and cauda pale. Dorsum without dark markings …..Brachycaudus helichrysi

- SIPH and cauda dark. Dorsum with a solid dark shield or with variably developed dusky markings, and dark intersegmental muscle plates …..18

18 Dorsal abdomen with an extensive solid black shield. SIPH 2.1-3.4 × cauda. R IV+V 1.5-2.0 × HT II. Mesosternum with a pair of dark mammariform processes

…..Brachycaudus cardui

- Dorsal abdomen with variably developed dusky segmental markings, and dark intersegmental muscle plates. SIPH 1.0-1.4 × cauda. R IV+V 1.2-1.4 × HT II. Mesosternum without mammariform processes …..19

19 Spiracular apertures rounded. SIPH 1.0-1.4 × cauda …..Brachycaudus salicinae

- Spiracular apertures reniform. SIPH 1.4-1.8 × cauda …..Dysaphis inulae

20 R IV+V 2.3-3.0 × HT II, and bearing 17-26 accessory hairs (Fig.34d). Head smooth, except for a well-developed rather scabrous median frontal tubercle, and divergent ANT tubercles, each bearing a rounded, scabrous process (Fig.34e) …..Ovatus inulae

- R IV+V less than 1.6 × HT II, and bearing less than 10 accessory hairs. Head smooth or spiculose, with ANT tubercles undeveloped or variably developed, without a scabrous median frontal tubercle …..go to key to polyphagous aphids

Iochroma Solanaceae

Iochroma cyaneum Macrosiphum euphorbiae

Ionidium see Hybanthus Violaceae

Ionopsis Orchidaceae

Ionopsis utricularioides Aphis spiraecola

Iozoste = Actinodaphne Lauraceae

Ipecacuanha = Carapichea Rubiaceae

(N.B. a record of Aphis nerii from Ipecacuanha was probably based on ‘Bastard Ipecacuanha’, which is Asclepias curassavica.)

Ipomoea (including Pharbitis) Convolvulaceae

I. aculeata Myzus persicae

I. alba Macrosiphum euphorbiae

I. aquatica Aphis gossypii; Myzus persicae;

[Rhopalosiphum nymphaeae]

I. argentaurata Aphis gossypii

I. argentea Macrosiphum euphorbiae

I. asarifolia Aphis gossypii

I. batatas (incl. var. edulis) Aphis craccivora, gossypii, nasturtii, spiraecola;

Aulacorthum solani; Geopemphigus floccosus;

[Greenidea ficicola]; Macrosiphum euphorbiae;

Myzus persicae; Neomyzus circumflexus;

Pseudomegoura magnoliae

I. biflora Myzus persicae

I. cairica Geopemphigus floccosus; Myzus persicae

I. calophylla Aphis gossypii

I. carnea Aphis gossypii

I. crispa Myzus persicae

I. dichoroa = I. calophylla Aphis gossypii

I. dissecta = Merremia dissecta

I. eriocarpa Aphis gossypii

I. fistulosa Aphis fabae, gossypii

I. floribunda = Jacquemontia floribunda

I. hederacea = I. nil

I. imperati Myzus persicae

I. indica Myzus persicae

I. learii = I. indica

I. littoralis Myzus persicae

I. lobata [Myzakkaia verbasci]; Myzus ornatus, persicae;

Neomyzus circumflexus

I. maxima Myzus persicae; Neomyzus circumflexus

I. mexicana Myzus persicae

I. nil (incl. var. japonica) Acyrthosiphon malvae;

Aphis craccivora, gossypii, nasturtii, spiraecola;

Aulacorthum solani; Macrosiphum euphorbiae;

Myzus ornatus, persicae; Neomyzus circumflexus;

Pseudomegoura magnoliae

I. palmata Aphis gossypii; Aulacorthum solani;

Geopemphigus floccosus; Myzus persicae

I. pandurata Aphis gossypii

I. pes-caprae Myzus persicae

I. purpurea [Aphis sp. (Davletshina 1964)]; Aulacorthum solani;

Macrosiphum euphorbiae; Myzus persicae;

Neomyzus circumflexus

I. rubrocaerulea = I. tricolor

I. sinensis = I. biflora

I. staphylina Aphis (Toxoptera) citricidus

I. stipulacea = I. cairica

I. stolonifera = I. imperati

I. tiliacea Aphis spiraecola

I. tricolor Aphis aurantii, frangulae ssp. beccabungae, gossypii;

Myzus persicae

I. villosa = I. argentea

Ipomoea spp. [Capitophorus mitegoni]; Rhopalosiphoninus latysiphon;

[Sitobion indicum]

Key to apterae on Ipomoea:-

- ANT PT/BASE less than 0.5. SIPH absent. Groups of wax glands present dorsally on head, thorax and abdomen …..Geopemphigus floccosus

- ANT PT/BASE more than 1. SIPH tubular. No discrete groups of dorsal wax glands

…..go to key to polyphagous aphids

Ipomopsis Polemoniaceae

Ipomopsis aggregata Macrosiphum euphorbiae; Nasonovia takala

Key to apterae on Ipomopsis:-

- RIV + V with about 25 accessory hairs, 2.5-2.7 × HT II, which is very short (less than 0.07 mm). First tarsal segments with 4 hairs. ANT III with 10-41 rhinaria, mostly clustered on rather swollen basal half. Thoracic spiracular apertures much larger than abdominal ones. SIPH 1.2-1.7 × cauda, without subapical polygonal reticulation …..Nasonovia takala

- R IV+V with 7-10 accessory hairs, 0.8-1.0 × HT II, which is over 0.1 mm long. First tarsal segments with 3 hairs. ANT III with 1-10 small rhinaria. Thoracic and abdominal spiracular apertures of similar size. SIPH 1.7-2.2 × cauda, with subapical polygonal reticulation

…..Macrosiphum euphorbiae

(or try key to polyphagous aphids)

Iranecio Asteraceae

Iranecio taraxacifoliae Aphis craccivora

Iresine Amaranthaceae

Iresine calea Myzus persicae

I. celosia = I. diffusa

I. diffusa Aphis gossypii, spiraecola

I. herbstii Aphis gossypii; Macrosiphum euphorbiae; Myzus persicae

I. lindeni (?) Myzus ornatus, persicae

Iresine spp. Aphis coreopsidis

Key to apterae on Iresine:-

- SIPH long, dark and tapering, 0.24-0.4 × BL. Head, ANT I, II and base of III very pale, contrasting with dark rest of ANT …..Aphis coreopsidis

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

Iris Iridaceae