SUBFAMILY APHINAE 253 
Alate Vivipara. Head and thorax brown; color otherwise as in aptera. Venation of 
wings rather heavy and brown and slightly bordered. Body length 1.5-1.8; across eyes .42-.45; 
hind tibia 1.20-1.30; antenna 2.75-3; cornicle width the same as hind tibia; rostrum with 
needlelike tip .06 long, attaining 2d coxa. Hairs on vertex funnel-shaped with slender shaft; 
on antenna blunt, drooping and sparse; on hind tibia, pointed; on side of body funnel-shaped, 
without stalk, .02 long and numerous. Lateral tubercles absent. Cornicle cylindrical, without 
distinct flange. Cauda nearly parallel-sided. 
10-11 
Fig. 298. Capitophorus brevinectarius © 
Collections. On leaves and twigs of Artemisia longifolia. Colorado: Elk 
Springs. Wyoming: Chimney Rock (near Jelm). Apterous and alate summer 
viviparae June 26, apterae till Aug. 9; rare, but found in large colonies where 
occurring. Quite agile when disturbed. 
Type. U.S.N.M., No. 49294. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Extreme shortness of the cornicle (shorter 
than hind tarsal II and hardly equaling third length of cauda), and funnel- 
shaped hairs on body. 
[Genotype Capitophorus carduinus (Walker) ] 
Aphis carduina Walker, 1850:44. 
Capitophorus carduinus, van der Goot, 1915:115. 
Capitophorus flaveolus (Walker), Theobald, 1926:250, 
TS Fy 8 RE a 
32 
Hd 77, 
oceans) 
Fig. 299. Capitophorus carduinus 
Summer Vivipara. Pale green to transparent white; appendages pale. Body length 1-2; 
hind tibia .92-1; hind tarsal II .10; antenna 2.08; rostrum attaining between 2d and 3d coxae. 
Hairs capitate; on vertex with globate tips, .06 long in aptera, .02 in alata; on antenna and 
hind tibia .02 and sparse; on body in aptera globate and .04 long. Fore wing with media twice- 
forked; hind wing with both cubitus and media. 
Hosts. Leaves and stems of Carduus sp. (Not recorded from region.) 
Data for above description and figures were taken from Theobald (op. cit.) 
and van der Goot (op. cit.) and from specimens determined by the latter. 
° 
Capitophorus cefsmithi Knowlton 
Capitophorus cefsmithi Knowlton, 1940a:196. 
Ai LA L4 y 
83-89 
ee 
. «  A-IF 
ie ‘ a 09 
Body Hair Hd.Tib, R, } 
Fig. 300. Capitophorus cefsmithi 
Apterous Summer Vivipara. (Mounted on slide), body colorless; antenna beyond middle 
of III, tarsi and tips of tibiae dusky; cauda and rostrum pale to dusky; cornicle pale. Body 
