166 APHIDS OF THE RoCKy MOUNTAIN REGION 
Alate Vivipara. Head and thorax black; abdomen dark brown often with reddish tinge; 
in cleared specimens showing dark lateral areas, dorsal bands on abdominal VI and VII, 
and venter of I; anal and genital plates and cauda black; antenna, cornicle, rostral III and 
IV-+V, coxae, trochanters, tarsi and tips of tibiae blackish. Body length 1.5-2; across eyes 
.40; antenna 1.3-1.50 (in fall form 1.); hind tibia .85-1; rostrum attaining or surpassing 3d 
coxa. Hairs on antenna .02; on hind tibia .04-.05, exceeding in length the diameter of tibia. 
Cauda spatulate bearing 4-5 pairs of lateral hairs. 
Fall forms were smaller but agreed in all other characters. 
Collections. On leaves of Hedera helix. Colorado: Fort Collins. Utah: 
Logan. Alate viviparae June 5, Sept. 22 and small examples Oct. 17 and 25, 
apterous viviparae June 5 to Sept. 22; rare. 
Chief Distinguishing Characters. Dark body with tinge of maroon, long 
rostral IV-+V (.13-.15 attaining 3d coxa or abdomen), presence of sensoria on 
IV and often on V in alate vivipara and frequently on III in aptera, number of 
hairs on cauda (3-5) and short hind tarsal II (.10, shorter than rostral IV+V). 
This species is close and perhaps doubtfully separated from A. hederae 
Kaltenbach but differs as follows: Frequent presence of sensoria on III in 
apterous vivipara, length of rostrum, attaining or surpassing 2d coxa, maroon 
color of body and length of unguis (not exceeding III). 
Aphis pseudovalerianae Gillette and Palmer 
Aphis pseudovalerianae Gillette and Palmer, 1932a:143 and 1932b:434. 
Alate Vivipara. Head and thorax brown to black; abdomen light olive-green; with dusky 
lateral areas and on terminal segments dorsal bands; cauda, cornicle, and appendages brown 
to black. Body length 1.5-1.8; hind tibia .80; antenna 1.05-1.30, secondary sensoria rather small, 
slightly convex, hardly tuberculate; rostrum obtuse, attaining 3d coxa. 
Fig. 188. Aphis pseudovalerianae 
Apterous Summer Vivipara. Head brown; thorax dusky green; abdomen light olive- 
green, with slightly dusky lateral areas anterior to cornicles and dorsal dashes on VII and 
VIII; cauda and cornicle black; legs brown with tarsi and tips of tibiae black; antenna brown 
to black. Same in measurements as alata except rostrum which attains abdominal I. Hairs 
pointed, numerous, erect. Cornicle cylindrical, with flange, imbricated, bearing 2-4 hairs on 
proximal half. Cauda parallel-sided, broad and obtuse, with about 5 hairs on each side. 
Lateral tubercles present and large on pronotum and abdominal I and VII. 
Ovipara. Apterous. Head and prothorax brownish; abdomen yellowish olive-green; 
otherwise color as in summer aptera. Body 1.50; hind tibia .75; antenna .85; cornicle .13. 
Hind tibia very slightly swollen and bearing 2-3 irregular-sized faint sensoria. 
Collections. On root of Valeriana sp. Colorado: Log Cabin (west of Liver- 
more) and Fort Collins. Apterous and alate summer viviparae July 11 to Aug. 
2, oviparae Sept. 7 and 10; apparently rare. 
Type. U.S.N.M., No. 43843. Paratypes, Colo. Agr. Exp. Sta. Collection. 
This species differs from A. valerianae as follows: Longer, erect hairs, 
presence of hairs on cornicle, lighter color of body, shorter antenna and 
cornicle and shape of sensoria on antenna (not tuberculate). 
