262 APHIDS OF THE Rocky MOUNTAIN REGION 
Ovipara. Apterous. (Cleared and mounted), body immaculate, without dusky areas at 
bases of hairs; rostrum, especially IV+V, cornicle, tarsi and antenna beyond II black; 
coxae and distal portion of femora dusky; tibiae dusky with black tips; cauda, anal plate and 
genital plate pale to slightly dusky. Measurements as in apterous vivipara, Cauda with width 
greater than half the length, bearing 3 pairs of lateral hairs and 4 scattered dorsal hairs not 
near tip. Proximal sixth to fifth of hind tibia slightly swollen and bearing about 22 irregular- 
shaped sensoria. 
Male. Apterous. Color same as ovipara as described above or slightly darker and with 
head dark. Body length 2;-hind tibia 2-2.30; antenna 4.50; cornicle .60-.70; cauda .13-.15; 
III and IV bearing rather numerous:small sensoria. 
Apt. Viv, (95-116) (3en.0-2) 
(1.0F ~ 1.10) 
Alate Viv. 
tna phan ta} 
Fig. 312. Capitophorus longipes 
Collections. On leaves of Artemisia tridentata. Colorado: Estes Park, North 
Park, Gould and Boulder Ridge Road (in Northern Larimer County), State 
Bridge (near Wolcott) and Eggers. Utah: Cottonwood and Logan Canyons. 
Apterous summer viviparae July 30 to Sept. 12, alate viviparae July 30, sexuales 
Sept. 23; solitary, apparently rare; hard to find on account of solitary habit and 
protective coloration. 
Types. U.S.N.M., No. 41969. Paratypes, Colo. Agr. Exp. Sta. and Hottes Col- 
lections. 
This species does not fit this genus in all respects but on account of the 
clavate shape of the cornicle and short tapering cauda it seems to fit Capito- 
phorus better than any other genus known at present. 
Chief Distinguishing Characters. Protruding eye, lacking ocular tubercle, 
slightly capitate to simple hairs, short broad cauda with only 2 pairs of lateral 
hairs, slender shape of body and long legs (hind tibia about equal to the body 
in length), glaucous green body, ventrally needlelike tip of the rostrum, small 
weak sensoria on antenna, absence of sensoria in the male on V and their pres- 
ence on IV. 
Capitophorus magnautensis Knowlton and Smith 
Capitophorus magnautensis Knowlton and Smith, 1936c:110. 
i] a AAR GSRANARAL SVU SIS) 
5" 63-72 "e 
A “ 1.05 " 
we) HA Ta. % er, 
.30-40-' =m " 13- Dave: a 
Fig. 315. Capitophorus mi rast re 
Apterous Summer Vivipara. “Green.”” (Mounted on slides), immaculate with cauda and 
legs pale; antenna beyond II and tips of tibiae dusky to blackish; cornicle and tarsi and 
extreme tip of rostrum black. Body length 2.1-‘'2.60”; across eyes .52-.55; antenna 3.20-3.50; 
