SUBFAMILY APHINAE 259 
Cotypes. U.S.N.M. and Utah and Colo. Agr. Exp. Sta. and-Knowlton Collec- 
tions. , 
Chief Distinguishing Characters. Dorsal abdominal tubercles, brown body, 
number of hairs on cauda (more than 3 pairs) and sessile character of body 
hairs. 
Capitophorus heterohirsutus Gillette and Palmer 
Capitophorus heterohirsutus Gillette and Palmer, 1933:351 and 1934:151. 
Apterous Summer Vivipara. Color pale green, appearing frosted due to numerous in- 
fundibulate hairs; cornicle and appendages pale brownish to dusky. Body length* 1.50; hind 
tibia .58; antenna 1.27; rostrum acute, portion beyond hairs needlelike in ventral aspect, 
barely attaining 3d coxa. Hairs on vertex and dorsum of body varying from flattened infun- 
dibulate, without stalk, and .015-.02 long, to cylindrical and .03-.04 long or occasionally 
pointed and .07-.10 long (in nymph all hairs pointed); on antenna and hind tibia pointed. 
Lateral tubercles not evident. Ocular tubercle rudimentary. Terminal pad on tibia not 
evident. Cornicle cylindrical. Cauda tapering with slight neck, acute at tip and bearing 2 
pairs of lateral hairs and a single preapical one. 
Fig. 308. Capitophorus heterohirsutus 
Ovipara. Apterous. Same as apterous vivipara except hind tibia swollen on presaitat 
third or nearly half and bearing scattered small sensoria. 
Male. Apterous. Brown; with frosted appearance due to numerous funnel-shaped 
hairs; appendages brownish. Body length 1; across eyes .35; hind tibia .57; antenna 1.20-1.40, 
III, IV and V bearing numerous sensoria; cornicle .06-.12. 
Collections. On leaves and twigs of Artemisia tridentata. Colorado: Sheep 
Creek (in Northern Larimer County). Utah: Uinta Mountains and Sardine 
Canyon. Wyoming: Douglas. Apterous summer viviparae Aug. 13 and Sept: 17, 
oviparae and males Sept. 17; few collections but on these occasions numerous, 
in crowded colonies covering one entire young plant. 
Type.. U.S.N.M., No. 49297. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Heterogeneous character of the hairs 
(varying from sessile funnel-shaped to long, simple and pointed), short cylindri- 
cal cornicle (shorter than V) and green body in viviparae. 
Capitophorus hippophaes (Walker) 
Aphis hippophaes Walker, 1852:1036. 
Rhopalosiphum hippophaes Koch (synonym in part), Gillette and Bragg, 1915a:101; 
Gillette, 1915b:375. 
Capitophorus gillettei Theobald, 1926:238; Gillette and Palmer, 1934:149; Hille Ris 
Lambers, 1933:173 (synonymy). 
Fundatrix. Length 1.70; hind tibia .75; antenna 1.05, III+I1V coalesced .37, V .17, VI 
.12+.30; cornicle .45; cauda .15 on median line, .18 on side. Otherwise as in summer apterous 
vivipara. . 
Apterous Summer Vivipara. Young Nymph. Colorless with red dorsomedian line. Adult. 
Pale greenish yellow with scattered reddish streaks due to embryos showing through body 
wall; cornicle, cauda and appendages pale to slightly.dusky. Body length 1.20-1.50; hind tibia 
.78-.95; antenna 1.70-2.30; rostrum with tip in ventral aspect, ending in needlelike point, 
attaining 3d coxa. Cornicle clavate with swelling on inner side of distal third. Cauda tapering 
with narrow elongated tip, bearing 4 pairs of lateral hairs. Hairs capitate to globate with 
elongate stalk; evident on body only on mesonotum and terminal abdominal segments; on 
head, on vertex and on I; on remaining antennal segments blunt, very drooping. © 
*Specimens taken in Utah on Artemisia sp. show somewhat longer appendages. 
