260 APHIDS OF THE ROCKY MOUNTAIN REGION 
Alate Vivipara. Head and thorax brown; abdomen pale yellow with lateral areas on II, 
III and IV, narrow dorsal dash on II and dorsal patch on III, IV and V dark brown; antenna 
blackish beyond base of III; cauda pale yellow; tibiae and cornicle sordid to slightly dusky, 
darker at tip; tarsi blackish. Otherwise same as apterous vivipara except the following: 
Hind tibia .92-1.1; rostrum attaining only to 2d coxa. Hairs blunt to capitate on vertex and 
antennal I on remaining antennal segments blunt, very drooping and sparse; on hind tibia 
blunt. 
Ovipara. Apterous. Mustard-yellow shading laterally to rufous ferruginous; all appen- 
dages colorless except antenna, tarsi and tips of tibiae which are dusky. Body length 1.70; 
hind tibia .70; antenna 1.30; cornicle .45. Otherwise as in apterous vivipara except that nearly 
three-quarters of proximal portion of hind tibia is distinctly swollen and thickly covered with 
sensoria. 
Male. Alate. Head and thorax dark brown; abdomen rich yellow shading to greenish 
with short dorsal bands on all segments, often pale or broken on anterior and posterior seg- 
ments; appendages as in alate vivipara. Body length 1.55-1.70; hind tibia .80-1; aritenna 
1.70-2. 
Fig. 309. Capitophorus hippophaes 
Collections. On leaves and stems of Hippophae rhamnoides and Eleagnus 
sp. as winter hosts; Polygonum sp. as summer host. Colorado: Boulder, Eagle 
and Fort Collins. Utah: Morgan. Fundatrices March 9 to May 20, apterous 
summer viviparae June 2 to Oct. 21 on summer host, alate viviparae May 20 to 
Oct. 21 on summer host, males Sept. 16 to Oct. 20 on summer host, oviparae Oct. 
5 to Nov. 9 on winter host; common. 
Theobald (op. cit.) contended that Walker’s species (he does not state 
whether he observed Walker’s types) was identical with Koch’s R. hippophaes 
and that the latter differed from Gillette’s species in the presence of conspicuous 
capitate hairs on body of aptera. He therefore erected Gillette’s species as new 
and named it gillettei. Hille Ris Lambers (op. cit.) considers C. gillettei as a 
synonym of C. hippophaes (Walker) and his conclusion (he also fails to men- 
tion whether he observed Walker’s types) seems to be supported by Walker’s 
statement “front bristly” in aptera, which implies absence of noticeable hairs 
on the rest of the body, which character agrees with Theobald’s gillettei. 
Chief Distinguishing Characters. Absence of noticeable hairs in apterous 
vivipara posterior to mesothorax except on tip of abdomen, clavate cornicle, 
long unguis (2 to near 3 times III), length of rostral IV-+V (.10), presence of 
sensoria on V and moderately long stalk of the hairs on apterous vivipara. 
Capitophorus infrequens Knowlton and Smith 
Capitophorus infrequens Knowlton and Smith, 1936e:231. 
Apterous Summer Vivipara. (Mounted on slide), body pale; legs, cornicle and cauda 
pale; antenna beyond middle of IV and entire tarsi dusky. Body length 1.40; across eyes .33; 
antenna 1.10; hind tibia .55; rostrum attaining 2d coxa. Hairs infundibulate and stalked on 
body; blunt and inconspicuous on appendages. Cornicle slightly clavate, hardly imbricated. 
Cauda parallel-sidéed, blunt, bearing 2 pairs of lateral hairs. 
