SUBFAMILY APHINAE 233 
Male. Alate. Color same as alate vivipara except the following: Abdomen with slightly 
dusky markings on lateral areas and dorsal bands on segments anterior to cornicles. 
Egg. Newly laid, pale green; later, black. Size .70 by .35. 
Collections. On leaves of Clematis ligusticifolia. Colorado: Fort Collins, 
Poudre Canyon and Whitewater. Fundatrices April 26 and 28, apterous summer 
viviparae July 1 to Sept. 25, alate viviparae July 18 to Sept. 25, oviparae Sept. 
25 to Oct. 23, males Sept. 28 to Oct. 10; in small colonies or solitary; rather com- 
mon but inconspicuous on account of protective coloration, concealed position 
under leaves and more or less solitary habit. 
70 —- 60 
o> alts Viv g . 
1.00-\.36 
Apt Viv, =Q= Fund. 6 Lie 
CLO DD -c8s, ae 
75 -.95 Sen. 40 
Fig. 272. Amphorophora brevitarsis 
Type. U.S.N.M., No. 49292. Paratypes, Colo. Agr. Exp. Sta. Collection. 
Chief Distinguishing Characters. Pale green’ body, tapering cauda with 2-4 
pairs of lateral hairs, sensoria on III (nearly in a single row and 20 in number 
in alate vivipara 1-12 in aptera), length of reticulated area on cornicle (.06-.08), 
length of rostral IV+V (.14) and short hairs on hind tibia (.02-.03). 
Amphorophora crataegi (Monell) 
The Four-spotted Hawthorn Aphid 
Siphonophora crataegi Monell, 1879:20. 
Macrosiphum crataegi, Patch, 1914a:255; Hottes and Frison, 1931a:304; Gillette and 
Palmer, 1934:137. 
Fundatrix. First Instar. Head dusky; thorax sordid yellow; abdomen pale yellow with 
2 longitudinal green lines on dorsum to abdominal VI; appendages and cornicle blackish. 
Adult. Light lemon-yellow with a pair of green dorsolateral lines extending from pronotum 
to abdominal VII; cornicle and appendages pale with dark tips; cauda pale. Measurements 
as in apterous summer vivipara, except antenna 2 and as figured. 
Te SSR 
Glee eae | 
Gaver s Eero ETP R AM Ty OL hereon 
yet eee ees :60) 5S) —_ 
aa rE 
ae ~ Ci COMES ie} Ch tea fo 2 at oma 
R OSS ES y ee (en ee: em oes 
Fig. 273. Amphorophora crataegi 
Apterous Summer Vivipara. Light lemon- to canary-yellow, with two pairs of grass- 
green spots, one on abdominal I and IV each; cauda, anal plate and cornicle pale; appendages 
pale with dark tips; tarsi black at tip. Body length 1.7-2.28; across eyes .45-.47; hind tibia 
1.2, hind tarsal II .10; antenna 3-3.50; rostrum attaining 2d coxa. Cornicle moderately swollen 
in distal half and not reticulated. Cauda broad, tapering; rather acute and bearing 3 pairs of 
lateral hairs, one of these pairs close to tip. 
