SUBFAMILY APHINAE 129 
Male. Alate. Body length 1.25; cornicle .15; other measurements as in alate vivipara. 
Collections. On leaves and twigs of Prunus virginiana, badly curling leaves. 
Throughout region. Fundatrices April 18 to 22, apterous viviparae May 13 to 
Aug. 18, alate viviparae May 26 to Sept. 18, oviparae Sept. 30 and Nov. 2, 
males Oct. 15 to Nov. 1; very common. 
Cotypes. U.S.N.M. 
Chief Distinguishing Characters. Short 2d fork of the media of fore wing 
and broad rostral IV-+-V (width at base greater than half of length). 
Aphis cercocarpi Gillette and Palmer 
Aphis cercocarpi Gillette and Palmer, 1929a:17 and 1932b:391. 
Apterous Summer Vivipara. Greenish black; shining; antenna and legs pale with tips of 
segments dusky; cornicle and cauda blackish. Body length 1.3; hind tibia .60-.70; hind tarsal 
II .10; antenna .95; rostrum obtuse, s!ender attaining 3d coxa. 
Fig. 138. yee cercocarpi 
Alate Vivipara. Head and thorax black; abdomen blackish green; tibiae pale with tips 
blackish; antenna pale proximally, dusky on tip of III, IV and entire V and VI; cornicle 
and cauda dusky. Body length 1.33; hind tibia .67; antenna .85, secondary sensoria large. 
Hairs pointed, inconspicuous, drooping and sparse, .02-.03 long on vertex, antenna and hind 
tibia. Lateral tubercles hardly evident on prothorax and abdominal I and VII. 
Collections. On leaves and twigs of Cercocarpus montanus. Colorado: 
Loveland, Stove Prairie (above Bellvue), Palisade and Ingleside. Apterous 
viviparae Aug. 15 to 21, alate viviparae Aug. 21; rare. 
Type. U.S.N.M., No. 41461. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. The short rather wartlike cauda. 
Aphis chipetae Hottes 
Aphis chipetae Hottes, 1933:6; Palmer, 1936b:735. 
Apterous Summer Vivipara. Head and thorax slightly dusky; abdomen yellow-green 
mottled with brownish; cauda brown; cornicle and antenna pale proximally, dusky distally. 
Alate Vivipara. Head and thorax blackish brown; abdomen light green with dusky 
lateral areas, dorsum marked with specks anterior to cornicles, with bands posterior to corn- 
icles, with pale areas surrounding bases of cornicles; antenna, cornicle, cauda and legs dark; 
wing veins bordered with brownish. Body length 2; hind tibia .80-1; rostrum attaining ab- 
domen; lateral tubercles large and shallow; cornicle and body surface smooth. Hairs incon- 
spicuous, .02 long and rather sparse. Cauda rather acutely tapering, bearing about 6 pairs of 
hairs. Cornicle cylindrical, with flange and imbricated. 
| Alate Sen. 18-24 _ gen. 12-/6 sen. 73 
ae 
Yoga)? 2 
(.20- 25) 608-10) (.32-.40) 
(30-43) (26-3/) 
t Bo ese,e,. Aue das 
; 7. O- Hd.Ta. t. 2 
) (23°29), 95" Seno-6 Sen0-8 EPS Me sega 
Fig. 139. Aphis chipetae 
Collections. In crowns of Castilleia sp. Colorado: Skyway (near Cameo). 
Alate and apterous summer viviparae July 12. 
Type. U.S.N.M. 
Chief Distinguishing Characters. Smooth body surface, broad, shallow 
lateral tubercles, many hairs on the cauda (6 pairs), numerous tuberculate 
sensoria on III of alate vivipara and length of rostal IV-+V (not shorter than 
13 and attaining 3d coxa). 
