250 APHIDS OF THE ROCKY MOUNTAIN REGION 
not more than 35 visible. Hairs on vertex and antenna slightly capitate; .04 on side of body. 
Cornicle slightly swollen but constricted and reticulated just back of flange. Cauda parallel- 
sided with slight neck and bearing 3 pairs of lateral hairs. 
Male. Alate. Color similar to alate vivipara. Body length 1.86; antenna 3.50; cauda .13 
on median line, .17 on side. 
Collections. On Arnica sp. Colorado: Pingree Park, Skyway, Gould, and 
Grand Mesa. Wyoming: Centennial. Alate (numerous) and apterous (very 
few) viviparae Aug. 15 to 23, males Aug. 16 to 20; apparently somewhat rare. 
Cotypes. Canad. Nat. Collection at Ottawa. 
Chief Distinguishing Characters. Green body, length of reticulated tip on 
cornicle (.08-.10 long), remainder imbricated, length of cornicle (about the 
same as III), number of sensoria on III of alate vivipara (35-57), length of 
rostral IV+-V (.22) also its hairiness, rather long tibial hairs (.04-.05) and length 
of cauda (.36 and .43) and number of pairs of lateral caudal hairs (3). 
This species is very close and almost certainly identical with A. david- 
soni Mason, from thimbleberry (Rubus sp.). Furthermore, the fact that in 
latter part of August the individuals were practically all alate viviparae and 
alate males, the latter as recorded by Hottes (op. cit.), indicates that migration 
takes place to a winter host. However, this species is here retained as distinct 
awaiting exact observation proving the migration between Rubus and Arnica. 
Amphorophora bonnevilla Knowlton and Allen 
Amphorophora bonnevilla Knowlton and Allen, 1937b:309. 
Alate Vivipara. ‘“‘Green.’”’ (Mounted on slide), pale with all appendages pale except tarsi 
and tips of tibiae which are dusky. Body length 2; across eyes .45; antenna 3.50 and more 
(tip broken); hind tibia 2.20-‘‘2.32’’; rostrum attaining between 2d and 3d coxae. Cauda slen- 
der, tapering, bearing 4-5 hairs on each side. 
re 
7.77. Set 19 I 
angus pease. VN asaV eas mace = 8 
60-66 (4-17 os le-.| 8 --+4 
yh pies? 
Hd. Tib. o* oo R Co 
| 75-88" 
A 
Fig. 271. Amphorophora bonnevilla 
Collections. On red raspberry (Rubus strigosus). Utah: Farmington. Alate 
viviparae, June 11. 
Type. Knowlton Collection. 
Chief Distinguishing Characters. Length of IV (equal to III) and slender 
cauda. 
Amphorophora brevitarsis Gillette and Palmer 
Amphorophora brevitarsis Gillette and Palmer, 1933:356 and 1934:136. 
Fundatrix. Head pale greenish buff; rest of body pale yellowish green or apple-green; 
cornicle and appendages pale with dark tips; cauda and anal plate pale. Measurements as in 
summer apterous vivipara except the following: Body length 2-2.75; hind tibia 1.64-1.90; 
antenna 2.65-3. 
Apterous Summer Vivipara. Pale yellowish green to pale yellowish; all appendages pale 
with tarsi and tips of antenna and cornicle blackish. Body length 2-3; across eyes .47-.50; 
hind tibia 2-2.3; antenna 3-4.10; rostrum obtuse, slightly surpassing 2d coxa. Hairs blunt; on 
sides of abdomen .01-.02 and sparse. Lateral tubercles shallow. Cauda tapering, bearing 2-4 
pairs of lateral hairs and 1-2 dorsal preapical ones. 
Alate Vivipara. Head and thorax yellowish brown; abdomen pale yellowish green to pale 
yellowish; all appendages pale except tips of segments and of cornicles which are dusky to 
black. Measurements as in apterous vivipara except rostrum not surpassing 2d coxa. 
Ovipara. Apterous. Same in color and measurements as apterous summer vivipara ex- 
cepting hind tibia the proximal half of which is slightly swollen and bearing numerous small 
slightly convex sensoria and the cauda which is slightly shorter and broader. 
