SUBFAMILY APHINAE 261 
Collections. On leaves of Artemisia tridentata. Utah: Big Cottonwood 
Canyon. Apterous viviparae Aug. 22; apparently rare. 
Type. Knowlton Collection. Paratypes, U.S.N.M. and C. F. Smith Collection. 
27 sen. | 
IV. 
Sls co. "TD Hatibs 
Dorsal Hairs 06-.08 
Fig. 310. Capitophorus infrequens 
Chief Distinguishing Characters. Very short cornicle (hardly as long as the 
hind tarsal II), length of cauda (not longer than 1.5 times base of VI), and 
length of unguis (shorter than 1.5 times III). 
Capitophorus longinectarius Gillette and Palmer 
Capitophorus longinectarius Gillette and Palmer, 1933:352 and 1934:151. 
Apterous Vivipara. Pea-green, appearing frosted due to funnel-shaped hairs; cornicle and 
appendages pale to brownish, Body length 2.30-2.45; hind tibia 1.15-1.77; antenna 3-4.90; 
rostrum acute, tip needlelike in ventral aspect, surpassing 2d coxa. Hairs on vertex funnel- 
shaped, with slender ‘stalk, set on tubercles; on antennal I funnel-shaped to fingerlike, on II 
same or slightly smaller; on III merely blunt, rather numerous; on hind tibia pointed or 
blunt, very drooping, numerous; on body funnel-shaped, with short stalk to sessile, set on 
tubercles, very numerous. Tibiae without terminal pad. Lateral and ocular tubercles not 
evident. Cornicle slightly swollen just before flange, imbricated. Cauda elongate-tapering, 
bearing 2 pairs of lateral hairs and a single dorsal preapical one. 
y 
er oe ) Wey 
Co. YO ayo aya yr IMMA NT  y VUES 
70 - 105 
Ha, Ey Hd.Ti- a 
SRC) hs PGA 
*s 15-16 if Body Hairs oma 
Fig. 311. Capitophorus longinectarius 
Collections. On leaves and stems of Artemisia longifolia. Wyoming: Colo- 
rado-Wyoming line at Chimney Rock (east of Jelm). Utah: Mount Timpanogos. 
Apterous summer viviparae June 26 and July 26; rare. 
Type. U.S.N.M., No. 49298. Paratypes, Colo. Agr. Exp. Sta. and Knowlton 
Collections. 
Chief Distinguishing Characters. Extremely long cornicle (.90-1, equalling 
or exceeding III), long IV (often longer than III) and funnel-shaped hairs with 
short stalk to sessile. 
Capitophorus longipes (Gillette and Palmer) n. comb. 
(Plate III, 1-2) 
Macrosiphum longipes Gillette and Palmer, 1928:1 and 1934:186; Knowlton and Allen, 
1938c:81, 
Apterous Summer Vivipara. Paris-green; powdery, giving glaucous green effect, coin- 
ciding with color of leaves of host plant; cauda and anal plate pale or slightly dusky; cornicle, 
rostrum, legs and antenna beyond II black, I and II dusky. Body length 2.4-2.96; across eyes, 
.65-.67; hind tibia 2.5-3; antenna 4.7-5.3; rostrum surpassing 2d coxa. Hairs simple to slightly 
capitate; on hind tibia .05-.08; on side of abdomen .03-.05. Ocular tubercle absent; eyes pro- 
truding. Cornicle slender, slightly clavate at tip, imbricated and with very small flange, bear- 
ing 2-5 short hairs. Cauda tapering, broad, width at base about equal to half the length, bear- 
ing two pairs of lateral hairs and a single dorsal preapical one. 
Alate Vivipara. Head and thorax yellowish brown, covered with powder. Otherwise 
same as apterous summer vivipara except as follows: Rostrum merely attaining 2d coxa. 
Wing veins bordered with dusky and hairs slightly shorter. Sensoria present on III but small, 
weak and scattered. 
