SUBFAMILY APHINAE 187 
Genus Asiphonaphis Wilson and Davis 
Wilson and Davis, 1919c:39. 
Characters. Cornicle absent. Otherwise same as genus Aphis. 
Genotype (monotypical), Asiphonaphis pruni Wilson and Davis. 
Key to Species of Asiphonaphis 
1. Sensoria more than 10 on III of alata; unguis 3 times length of 
LETS ey ONS ESO RY cae oats Rae eh rh Se Sea AS oa Mp al ee “EE pruni 
Sensoria not more than 10 on III of alata; unguis not longer than 2 times 
SEEGER DAR re sole ee al el ee ae pe Oe ee ee ee utahensis 
Genotype Asiphonaphis pruni Wilson and Davis 
Asiphonaphis pruni Wilson and Davis, 1919c:39; Gillette and Palmer, 1932b:455. 
Fundatrix. Same as summer apterous vivipara except that body is rather larger and more 
robust; size 2.40-2.60 by 1.60; antenna 1, six-segmented. 
Apterous Summer Vivipara. Head and pronotum brownish; rest of dorsum pale yellowish 
or whitish green, with intersegmental lines bluish green and broader on median line, some- 
times coalescing to form median line of green; appendages pale brownish with tarsi and tips 
of tibiae black. Body length 1.60-2.40; hind tibia .80-.85; antenna 1-1.2; rostrum rather broadly 
obtuse, attaining between 1st and 2d coxae. 
Fund, 
ly Apt. 
fa wero Bt / Vik 
EO Ress aA 
0 Da 20 716 -.2! 4-14 haere : ah) 
~ “Sen, 13-20 
B * 28 6 
; isa) gh Hd. 
Fig. 216. Asiphonaphis pruni 
Alate Vivipara. Head and thorax black; abdomen pale greenish yellow to whitish, with 
narrow bluish green intersegmental lines sometimes broadened medially to form median line 
anterior to V, replaced on VII and VIII by dusky bands; broken dashes on middle of I, 
dusky lateral areas on I to VI inclusive; antenna, femora, knees, tarsi, anal plate and tips of 
tibiae black; cauda pale; wing venation not noticeably dusky. Body length 1.8-2; hind tibia 
.90-1; antenna 1.2-1.4. Hairs pointed. Cauda tapering or parallel-sided with slight constriction 
at middle, bearing 2-3 hairs on either side and a single dorsal preapical one at tip. Lateral 
tubercles large and conspicuous on prothorax and all abdominal segments except V. 
Ovipara. Apterous. Color same as in apterous vivipara. Body length 1.6-2, rather 
pointed posteriorly; antenna .85; hind tibia slightly swollen and bearing a few sensoria. 
Egg. At first; pale yellow; later, black. Size .70 by .26. 
Collections. On leaves of Prunus virginiana and P. armeniaca. Colorado: 
Boulder, Estes Park, Bellvue and Fort Collins. Utah: Bountiful and Moab. 
Fundatrices May 6, apterous summer viviparae May 13 to Sept. 15, alate vivi- 
parae May 25 to Aug. 11, oviparae Oct. 11; not rare. 
Cotypes. U.S.N.M., Davis and Granovsky Collections. 
This form differs from the original description of Asiphonaphis pruni in 
slightly shorter antenna, entire lack of sensoria on V and lack of noticeable 
duskiness of wing venation. The host is a different species of Prunus. The 
differences seem hardly of specific significance so the Colorado specimens are 
here placed under Wilson’s and Davis’ species. 
Asiphonaphis utahensis Knowlton 
Asiphonaphis utahensis Knowlton, 1937a:170. 
A7-.26 .10-.13 24 
Fig. 217. Asiphonaphis utahensis 
"24-32 Sen.5-8 .\7-22 
Alate Vivipara. (Cleared and mounted on slide), head and thorax black; abdomen with 
lateral dusky spots and bands on I, VII and VIII, broken dashes on VI; antennae, coxae, 
tarsi, tips of tibiae and cauda black. Body length 1.25-1.70; across eyes .32-.37; antenna 1.24- 
