SUBFAMILY APHINAE 113 
Subtribe Aphina Gillette and Palmer 
Aphidina Baker, 1920a:40. 
Aphina Gillette and Palmer, 1932b:369. 
Characters. Frontal tubercles but slightly developed, on median side only; 
hardly ever exceeding vertex.* Hairs usually simple, pointed,** short, on an- 
tennal III hardly ever longer than diameter of segment bearing them. Lateral 
tubercles present. Cauda usually shorter than twice length of hind tarsus. 
Cornicle never longer than 4 times hind tarsus, never reticulated. Other char- 
acters as given for tribe. 
10. 
1. 
12. 
13, 
14, 
15. 
16. 
17. 
18. 
19. 
Key to Genera of Aphina 
BREST ECR IOS (is) 90) Men ee tt ee a ea Be) We Ue ede Atarsos 
PACT DD & oe rete oid Solr le a AEE ie ete Ri es Rear mee ENS RL or I ME UD, 2 A We 74 
Dorsaltubercle present on abdominal, VIIT (Rig. 218 Vusccccccecssnudstececesntsmeseastveesooneany eucenqeneonese 3 
Seem TRIS TOT CLE TREC I NITE corres eet ste clea rs ee ahs th an ceca ero sates eee ee 4 
Cornicie with opening on inner) side. of. tip) (ps 188)-2..0 +0... eee eee Aspidaphis 
Cornicle with opening terminal, not on inner side of tip (p. 196).........2...2..-00-000---- Cavariella 
Frontal tubercles entirely lacking; vertex flat..................::.::cecceeee-0e- es Pith he fs eae lad sg 5 
Frontal tubercles slightly developed; vertex COMVEX...........222..cc220ccceeeeceeeeeceeeesecereeeesertteeeesseeeeese 6 
Cornicle with knoblike enlargement at tip (p. 200)........2..22..e2cccccscceecceeeeeeeeeeeeseees E pametibaphis 
Cornicle not knoblike at tip but slightly swollen on inner side 
Pea tae tl TR) ee OS) Necicei eee t eee ae ene hn tea ae hd Sed A Ad Bae Pseudoepametbaphis 
Gorniclerabsenta( DAL Sz ieets coe eee ee eee i See, ent ae ee el Asiphonaphis 
Cornicleg presents. cea ees ee operas be habe dhe cotionwepl ch och armen acibtoh wall Seach db one earahe 7 
PSCC RUMCNE NOTTD CECE AGL WEL RESUS SO soe ose ca saat onc, cdedaacilhs ough Beas anda enchant oath eon eeates 8 
GornicleslonpernthanawidthvatupaSe--cs cesses oneal) A Reed es Se pease 11 
Bodyaotsaptetanhnemispierical: (pa 224 esses eee cstoeteees sessed ast h eacece actcecsse ema oaeee Siphonatrophia 
IBOd vz0r-a DLeramot Nemispherical see eset es teeth a ei Be ec oe SS ce elect tau iccawe 9 
Body hairs conspicuously flabellate or infundibulate (p. 202).............. Flabellomicrosiphum 
SOC Vali IN Sait O Giicl SUA OV. Creer casera es ence ne Sa cptonat See ae-ceae acts es aie bus! aphetus augeeeusacs ced eivasmiveeh a eeercaete 10 
Cauda shorter than broad; cornicle approximately cylindrical (p. 206)............ Microsiphum 
Cauda shorter than broad; cornicle hardly more than a mere pore (p. 228)............ Zyxaphis 
Gaudaslongerathatiwbroade (pis 190) ice-sheet ches oe coc csses Some Joe Lau teta cyanea ad sopensetie woh Brachycolus 
Cannarsamerrmilength as, wid tin (peel) G) srce- terse. science cee ccet a notnena coe oe eeecten sete tedeeee (in part) Aphis 
Pad ASCO CGO MNOLPLOIE CLRt lia Tyna Goer cere ees c eee oe cee oe oh baa soe etna cote as as eae rete ea locassteeee 12 
Cauda tapering to spoon-shaped, longer than width at baSe.................-20:2escceeeseeceesseceeesecceseeees 13 
Brontdaletubercles exceeding Vertexe( Do 143.) scccc.cceconestcendessscseeecsenedoacasosseascinanttockcaaes Amphicercidus 
Frontal tuperclessnot exceeding vertex. (psc 192) cescccccccckecessccsenceseoncececssasccsscivascacsacpenetieses Braggia 
Dargah Un BT a We Para Lae te ea Hie Rone ag Cb eR ey ne peat ee Le er ee eer 14 
OrneeleainCrasSSat CLOTKCLA Via CO cctrrcre es ee eee nee ccna ted Hae meshed e etree sane saie wer ieee ee cee A eee 15 
MOLEEWAN SC AWithimedia twiCest OL KG sess ceret cas te cece ect tee cme ces nec Pees Or See Sue aee ae Sas Sebset Coane ay See yy 
HOLeeWwine Withy Media cOmce-LOLTKeG | (ps) 220) sc castcneeece Sacco eacect ee eaedec toes cen eaee aren eee eee Toxoptera 
Corniclesioncer than caudan (ips 21:1) cre rte ete ee A eterna, Senne eee Rhopalosiphum 
Cormcle NOelOn ger: thar Carn aiccvteeee ses ee ee ee as ae oe aaa nce aes Pema Fusco ssc emen n te eee ee ie 16 
Cauda elongate, distinctly longer than wide at base (p. 204)........2.......2.-ceeceeeeeee-- Hyalopterus 
Cauda tapering, not distinctly longer than wide at base (p. 194)......................... Brevicoryne 
ORNLCTE MELT CUlat Cea CVOTS Cally CMC rset cee cena cere cease eect nae eee ne eee ee ee ee 18 
SormiclemOrreticulatediat iS ta lier cee tesco cee scree eee cee eee ee cree en ode neeeecen encores eee ene 19 
Anal plate with median protuberance resembling rudimentary cauda not 
longer than base of VI, (treated under Macrosiphina) (p. 246) ............:c:s000-0-- Artemisaphis 
Anal plate not as above; cauda longer than base of VI, Macrosiphumlike 
(treated under Macrosiphina) (p. 287, footnote)...............-..--.. Macrosiphum coweni complex 
Piamtercapitate.or tntuniinulate (0.199) 6250) pelt hl la ie ee eon Durocapillata 
EET ETS TOS if ge Ie IW bal 26 cote cole 82M 0 Sanh a pel tet Alby ol epee Un UMa AEP a/ Alba tal 1S ete Aphis 
Genus Amphicercidus Oestlund 
Oestlund, 1922:126; Gillette and Palmer, 1932b:370. 
Characters. Vertex convex; frontal tubercles produced on median side, 
slightly exceeding vertex. Hairs pointed or blunt. Cauda short and broad 
resembling anal plate, bearing short hairs, no longer than those on vertex. 
*Ocellus not counted as part of vertex in comparisons with frontal tubercles. 
**Hairs blunt and heavy-cylindrical in Braggia, capitate in Durocapillata and in a few 
species‘of Aphis ; funnel-shaped in FJabellomicrosiphum, 
