SUBFAMILY ERIOSOMATINAE 367 
Alate Vivipara. Head and thorax dark; abdomen olive-green; woolly; appendages dark. 
Body length 2-2.8; fore wing 3.3-4.2; hamuli 3-4 in number; hind tibia .75-.95; hind tarsal II 
.20; antenna .85-.90; rostral IV-+V .10, attaining 2d coxa. Hairs minute and sparse. 
Pseudo Gall. Loosely rolled leaves. 
Collections. As winter host in slightly rolled leaves of Crataegus sp. and 
Amelanchier alnifolia, summer host unknown. Colorado: Paonia, Boulder, 
Loveland, Bellvue, Poudre Canyon and Fort Collins. Idaho: Rexburg. Funda- 
trices April 19 to June 6, alate fundatrigeniae May 29 to June 23; infestations 
heavy but rare. 
Fundatrix 
— Mesothoracic 
( say) J Glands. 
(.22-.26) 607-10) (12-15) 
Gen. 15-2) (sen. 0-6) 
Waa iy NO aaa nyt 
(26 -.43) (sen. /5-2/) (.13-.20) (14 —.19) 
Fig. 442. Prociphilus corrugatans 
Our specimens differ from Sirrine’s description in that the fundatrix has a 
five-segmented antenna instead of six-segmented as described by Sirrine (per- 
haps erroneously since subsequent workers have apparently failed to take 
apterae of what is considered to be this species with more than five-segmented 
antenna) and in not having 6-12 sensoria on IV in alata. Our specimens agree 
with P. alnifoliae Williams excepting that body length of alate vivipara is not 
3.54. Maxson’s studies (op. cit.) place Williams species as a synonym of P. cor- 
rugatans Sirrine. 
Chief Distinguishing Characters. Woolly secretion not in two filaments, 
secondary sensoria on antenna oval and transverse, length of rostral IV+V 
(about half as long as hind tarsal II) and leaf deformation (only loosely curled). 
Prociphilus erigeronensis (Thomas) 
The White Aster Root Aphid 
Tychea erigeronensis Thomas, 1879 :168. 
Trama erigeronensis, Forbes and Hart, 1894:93. 
Forda flavula Rohwer, 1908:68 (new synonymy). 
Prociphilus erigeronensis, Patch, 1918:46; Cutright, 1925:207; Gillette and Palmer, 
1934:231; Braidwell, 1942:129 (description of fundatrix). 
Apterous Summer Vivipara. Head brownish; body yellow-buff; woolly; cauda, protrud- 
ing anal plate and appendages blackish. Body length 2-3; hind tibia .35-.45; antenna .50-.55. 
Wax glands in longitudinal rows on dorsum of body, on head one pair on vertex, another pair 
posterior to vertex and 4 single ones along posterior edge of head. 
a mM 
"20 -.30) (sen. nee od vie ay” O1S>.18) 
POL} foe a 0’) h Eo 
Fig. 443. eae sreeone te 
Alate Vivipara. Olive-yellow on abdomen, brown on head and thorax; woolly; append- 
ages blackish. Body length 2.2; fore wing 2.5; hamuli 3-4 in number; hind tibia .55-.60; an- 
tenna .80. Rostrum attaining abdominal I or II. Lateral tubercles present on prothorax and 
some of anterior abdominal segments. Hairs on III and hind tibia sparse, shorter than diam- 
eter of segment bearing them. 
Young. Newborn, almost milky white. 
Collections. Winter host unknown; summer host, roots of grasses, Artemisia 
sp., Grindelia squarrosa, Helianthus sp., Taraxacum officinale and ants’ nests. 
