182 APHIDS OF THE ROCKY MOUNTAIN REGION 
slightly developed, noticeable on abdominal II, III, IV and WII. Cornicle cylindrical or 
slightly stouter at base and without distinct flange. Cauda tapering, acute and bearing 5-6 
hairs on each side; no preapical dorsal hair evident. 
Collections. On roots of Sarcobatus vermiculatus. Colorado: Grand Mesa 
near Collbran. Apterous viviparae Aug. 4; rare. 
Type. U.S.N.M. Paratypes, Hottes Collection. 
Chief Distinguishing Characters. Pale immaculate body, antennal structure 
(partially coalesced III, IV and V), length of cornicle (equal to or longer than 
III and without definite flange), short, abruptly tapering, acute cauda bearing 
5 hairs on each side, long rostral IV+V (.20 long) equalling length of III and 
relative lengths of antennal segments (III, IV and V coequal and unguis slightly 
shorter). 
Aphis urovaneta Hottes 
Aphis urovaneta Hottes, 1950:24. 
Apterous Summer Vivipara. “Black; with powdery covering, giving grey appearance” ; 
(mounted on slide), antennal I, II and VI, rostrum, cornicle, cauda, anal plate, genital plate, 
femora, tarsi, knees and tips of tibiae blackish. Body length .95-1.20; across eyes .29-.35; 
antenna .70-.85; hind tibia .47-.70; rostrum attaining 3d coxa. Hairs short and sparse, incon- 
spicuous. Cornicle approximately cylindrical. Cauda slender, tapering, acute, bearing 4 pairs 
of hairs. 
PAP SAB EODAISVUR MURARITIANG SANIT OS OAS 
Alate 19-26 Sen. 3-7? 13-16 10-14 09-10 14-18 
Alate of=09)| 5. 
RAUNT BD Aptaom 
: pt.ao-.15 
CS ya = 24 ee Tere ee 
enna) CS a mat 
Hd. Tib. a) 0 09 12-14 x qe 
Co. oe bi 
05 < thie 
60 
Fig. 209. Aphis urovaneta 
Alate Vivipara. Color same as apterous vivipara except antenna which is dusky with only 
base of III lighter. Body length .85-1; across eyes .27-.32; antenna .80-.93; hind tibia .45-.60; 
rostrum attaining abdomen. Cauda slender, acute and inconspicuous. Vertex cone-shaped. 
Hairs inconspicuous. 
Ovipara. Apterous. Color and measurements as in apterous vivipara, except hind tibia 
which is slightly dusky and body length 1.35. Hind tibia distinctly swollen on nearly entire 
length and bearing many rather large sensoria. 
Male. Alate. Color and measurements as in alate vivipara except as shown in figure. 
Collections. On Eriogonum sp. Colorado: Gateway. Apterous viviparae 
Aug. 24 to Oct. 1, alate viviparae Aug. 24, sexuales Oct. 1; rare. 
Type. U.S.N.M. Paratypes, Hottes Collection. 
Chief Distinguishing Characters. Cone-shaped vertex in alate vivipara, 
small, acute cauda, small number of sensoria on III of alate vivipara, slender 
rostral IV+V and short cornicle (shorter than base of VI). 
Aphis valerianae Cowen 
A pbrelealeranas Cowen, (Gillette and Baker) 1895:121; Gillette and Palmer, 1932b: 
Apterous Summer Vivipara. Blackish green to greenish black; cauda and cornicle black; 
appendages brownish to dusky. Cleared specimens show head, pronotum, mesonotum, lateral 
areas in all abdominal segments, area behind cornicle, bands on abdominal VII and VIII, 
anal and genital plates dusky. Dorsum reticulated. Body length 2-2.50; hind tibia .80-1; 
antenna 1-1.35. 
Alate Vivipara. Alatoid Nymph. Thorax green, other parts black; abdomen tessellated. 
Adult. Head and thorax brownish black, abdomen greenish black; antenna, cornicle and cauda 
dusky to blackish; tibiae pale brownish with tips black. Cleared examples show the following 
