270 APHIDS OF THE ROCKY MOUNTAIN REGION 
This species is almost indistinguishable from C. pullus but differs slightly. 
in points 3, 6 and 7 above. Also the host plant differs. Further study as to 
limits of variation may prove the two forms to be the same species. 
Capitophorus shepherdiae Gillette and Bragg 
Capitophorus shepherdiae Gillette and Bragg, 1916:445; Gillette and Palmer, 1934:156. 
Fundatrix. Color and measurements same as apterous summer vivipara except that 
antenna is rather shorter. 
Apterous Summer Vivipara. Pale yellowish green to greenish yellow, with short trans- 
verse intersegmental dashes and spots of darker green; rostrum, cauda and anal plate pale; 
appendages and cornicle pale, becoming dusky distally. Body length 1.3-1.4; hind tibia .45-.50; 
hind tarsal II .08; antenna .65-.70, five-segmented; rostrum acute, tip rather needlelike, at- . 
taining between 2d and 3d coxae. Hairs conspicuously capitate, globate to slightly funnel- 
shaped and short-stalked, set on tubercles, quite numerous on dorsum, 3 dorsolateral and 1 
lateral row; on vertex and body .04-.05 long including tubercle; capitate on antennal I, .015; 
blunt on remainder of antenna and on hind tibia. Cauda short and tapering to broadly spoon- 
shaped bearing 2 pairs of lateral hairs and 1 dorsal preapical one. Cornicle slightly clavate, 
nearly smooth. 
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Alate Vivipara. Head and thorax dark brown to blackish; abdomen light green, with 
dusky markings on lateral areas, 3 on each side and a quadrate patch from III to center of 
VI; antenna, beyond base of III, blackish; cornicle dusky; cauda and anal plate greenish; 
legs pale greenish except tarsi and tips of tibiae which are dusky. Body 1.3-1.5; hind tibia .85; 
hind tarsal II .08-.09; antenna 1.1-1.2; rostrum attaining between Ist and 2d coxae. Hairs 
globate, on vertex; blunt on antennal I and II, and on hind tibia drooping and very sparse. 
Ovipara. Apterous. Similar in color and measurements to apterous summer vivipara 
except that color is more yellow and hind tibia is slightly swollen for most of length and 
bearing about 14-30 small sensoria on ventral side. 
Male. Alate. Color and measurements as in alate vivipara except as follows: Body length 
1 and length of cornicle .33. 
Collections. On leaves and twigs of Elaeagnus angustifolia, Hippophae 
rhammnoides and Shepherdia argentea. Colorado: Fort Collins and Laporte. 
Utah: Elsinore. Fundatrices April 25 to May 12, apterous summer viviparae 
June 16 to Oct. 23, alate viviparae June 4 to 19 and Sept. 16 to Oct. 8, sexuales 
Sept. 28 to Oct. 23; not rare. Found associated with C. hippophaes, C. braggii, 
and C. xanthii. 
Type. U.S.N.M., No. 41938. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Short unguis (shorter than III or cornicle, 
in aptera hardly equal to half length of cornicle), clavate shape of cornicle, 
conspicuous and numerous short-stalked capitate hairs over entire dorsum, in 
aptera, short antenna (hardly longer than half of body in aptera), cauda not 
with acute tip and length of cornicle (shorter than .50 in alata and shorter than 
.60 in aptera). 
