SUBFAMILY APHINAE 235 
Ovipara. Apterous. Same in color as apterous vivipara. Body length about 2; antenna, 
cornicle and rostrum as in apterous vivipara. In all forms the frontal tubercles are rather 
shallow and the hairs distinctly capitate and curved. Proximal third of hind tibia somewhat 
swollen and bearing numerous rather large sensoria. 
Collections. On foliage of “bedbug currant” (Ribes nigrum). Utah: Ameri- 
can Fork. Alate and apterous viviparae and one apterous ovipara, July 25. 
Type. Knowlton Collection. 
Fig. 275. Amphorophora fronki 
This species resembles A. petiolaris Knowlton and Allen, appearing to 
differ only in the somewhat shorter cauda in alata (not .38-.44). Study of a 
larger number of specimens of both forms is necessary to decide whether they 
are distinct species. From A. nigricornis and A. ribiella this form is separated 
by more swollen cornicles (greatest diameter not less than .08 instead of .05-.07). 
Amphorophora geranii Gillette and Palmer 
The Wild Geranium Aphid (Plate IV, 7-8) 
Amphorophora geranii Gillette and Palmer, 1929b:473 and 1934:138. 
Apterous Summer Vivipara. Dull green-yellow to pinkish, mottled with sooty or grass- 
green; cauda pale; cornicle pale proximally, dusky on distal two-thirds; antenna dusky except 
I, II and base of III; legs pale brownish. Measurements as in alate vivipara except rostrum 
attaining 3d coxa. 
Alate Vivipara. Head and meso- and metathorax brownish, remainder of dorsum dull 
green-yellow to grass-green and mottled with sooty green on abdomen especially on median 
line; cauda pale; cornicle pale proximally with distal two-thirds dusky; antenna dusky beyond 
base of III; legs pale brownish with tarsi and tips of tibiae black. Body length 2.6-3.65; 
across eyes .65; hind tibia 2.9; hind tarsal II .13; antenna 4; rostrum obtuse, attaining 2d 
coxa. Hairs slightly capitate; on side of body .05-.06. Cornicle slightly imbricated or smooth, 
slightly swollen in distal half. Cauda tapering and bearing 6-7 hairs on a side. 
(7-92) Gon Ga 26 
i) 
had viv Mate = OPS ¥ oe 
Ff) 
St are Vie Co pt Vi 
V 
Rn Aepetd 
Fig. 276. Amphorophora geranii 
Collections. On leaves of Geranium richardsoni. Colorado: Boulder, South 
Saint Vrain Canyon, Estes Park, Manitou, Mesa Lake, Lyons, Poudre Canyon. 
Idaho: Buhl. Apterous viviparae May 29 and Oct. 17, alate viviparae June 7 to 
July 16; rather common. 
