SUBFAMILY APHINAE 165 
Ovipara. Apterous. Usually dull green with tinge of rusty yellow to yellowish olive- 
brown; head light to dark dusky brown; cornicle, cauda, anal and genital plates, tarsi, knees, 
distal ends of tibiae and distal half of antenna black or blackish. Body length 1.40-1.50; an- 
tenna .85-1.0; hind tibia hardly swollen and bearing only about 10 large sensoria scattered 
along entire length. 
Male. Apterous.* Brownish yellow with head dusky brown; dark markings as in ovipara. 
Body length 1.10; antenna .90; cornicle .15. 
Egg. Newly laid, light green; later, shiny black. Size .60 by .26. 
- AH Vo 
entity <thae 
Fig. 186. Aphis pomi 
Collections. On leaves and twigs of thorn apple (Crataegus sp.), apple 
(Malus sp.), pear (Pyrus communis), Pyrus scopulina, and Sorbus sp., causing 
loose curling of leaves. Throughout region. Fundatrices March 18 to April 28, 
apterous summer viviparae May 22 to Sept. 28, alate viviparae April 22 to Sept. 
1, sexuales Sept. 16 to Oct. 20; eggs scattered over bark of twigs, hatching 
several days before buds open; very common and causing considerable damage. 
Chief Distinguishing Characters. Body apple-green occasionally yellowish 
to orange-yellow with black cornicles, number of sensoria (6-9) on III of 
alate vivipara, bushy cauda (6-7 hairs on each side), length of cornicle 
(.30-.40), rather long rostral IV-+V (.14), rather long unguis (about the same 
length as III and cornicle) and slender hind tibia of the ovipara which bears 
only a few sensoria scattered over entire length. 
Aphis pseudohederae Theobsld 
Aphis hederae Kaltenbach (misidentification), Essig, 1910:335. 
Aphis pseudohederae Theobald, 1927:196. 
© sen. ii 13 Sen, 0-4 
ICY 1m) Bist ty) y'y ddd 
T5-.) ars rePay nie -28 Cope 
SEs LE 
PROC 399 95940) 59s 
- 32-38 ar 45 Bava 
24-30 Sen.4-7 19-.25(0-3) + ee a 
Apt. Viv. sea aa (rmx) Co. 
(small). 09 12-13 
Fig. 187. Aphis pseudohederae 
Apterous Summer Vivipara. Dark maroon-brown; ‘antennal I and II, terminal segments 
of rostrum, cauda, anal and genital plates, coxae, trochanters, distal part of femora, knees, 
tips of tibiae and tarsi black. Body length 1.5-2; across eyes .38; antenna 1-1.25; hind tibia 
.70-.85; rostrum attaining abdominal I. Hairs rather long; .06 on vertex;. .04-.05 on hind tibia 
(diameter of tibia .03). Cornicle cylindrical or wider at base; cauda spatulate, bearing 3-4 
pairs of lateral hairs. 
*Label ‘‘Alate male” in Gillette 1908d Plate 6, Fig. 4 and Gillette and Taylor, 1908a:58 
should read “apterous male.” 
