SUBFAMILY APHINAE 269 
Alate Vivipara. Head and thorax blackish; abdomen pale greenish yellow with dusky 
lateral areas and dorsal patch; antenna dusky; tibiae pale brownish with black tips; cauda, 
anal plate and cornicle pale. Measurements same as in apterous vivipara except as figured. 
Hairs blunt to slightly capitate on vertex, body and antennal I and II; blunt on III, IV and V 
and on hind tibia. Cauda .10 on median line. 
Ovipara. Apterous. Pale greenish yellow to deep amber-yellow with all appendages pale 
to slightly dusky; tips of tibiae brownish, tarsi and tip of base of antennal VI blackish. Meas- 
urement about as in summer apterous vivipara or slightly smaller, except as follows: Cornicle 
.20; cauda .10 on median line and proximal two-thirds of hind tibia considerably swollen and 
bearing numerous large sensoria. 
Male. Alate. Color, measurements and sensoriation of antenna same as in alate vivipara 
or slightly smaller and with dorsal patch more broken into bands; cornicle .20 and cauda .10 
on median line. 
Collections. On leaves of currant (Ribes rubrum, R. aureum and R. sp.) 
for winter hosts, causing puffed red blisters on the upper surface of the leaves; 
on leaves of Stachys palustris and Leonurus cardiaca as summer hosts. 
Throughout region. Apterous summer viviparae on winter host May and June, 
on summer host June 24 to Nov. 5; alate viviparae on winter host May 30 to 
July 29, on summer host June 24 to Nov. 11; oviparae on winter host Oct. 6; 
males on summer host Sept. 18 to Nov. 11, winter host Oct. 27 to Nov. 1; com- 
mon. 
Chief Distinguishing Characters. Deformation of the infested plant (blisters 
on leaves yellowish to reddish in color), clavate smooth cornicle, long capitate 
hairs on antennal I and II, rather long rostral IV+V (.14) bearing rather numer- 
ous short hairs, yellow body and sensoriation of antenna of male (same as in 
alate vivipara, even to the size of the sensoria). 
Capitophorus rusticatus Knowlton and Smith 
Capitophorus rusticatus Knowlton and Smith, 1937c:150. 
Apterous Summer Vivipara. (Mounted on slide), body immaculate with brownish tinge; 
antenna beyond proximal half of III, entire cornicle, rostrum, femora except base, tarsi, knees 
and tips of tibiae black or blackish; cauda and anal plate pale to dusky. Body length ‘‘1.1’’- 
1.3-“'1.55”’; across eyes .34-.38; antenna 1.20-1.60; hind tibia .60-.85; rostrum, in ventral aspect, 
with needlelike tip, attaining 3d coxa. Hairs narrow funnel-shaped on vertex and frontal 
tubercles, with occasional pointed one on the latter; broad funnel-shaped on body; blunt to 
pointed and sparse on antenna, same on hind tibia and rather numerous. Cornicle slightly 
clavate and sometimes bearing 1-2 slightly funnel-shaped hairs. Cauda tapering and bearing 
2-3 pairs of lateral hairs and a single dorsal preapical one. 
oO a ge: 
26-.35 sen i-2 18-30 17-27 10 35 - .50 -"56" 
Co Haits 0-2 vy 
Pre eiinonnctirorocainen! COCKS rane) 
f ° BES i) LS ss 
Body 24 “ ~~ 20-40 2-15 
r 
Hairs Ha.Ta, 
Fig. 323. Capitophorus rusticatus 
Collections. On Artemisia tridentata. Idaho: Rexberg. Apterous viviparae 
July 14; apparently rare. 
Type and Paratypes. Knowltcn Collection. Paratypcs also in Colo. Agr. 
Exp. Sta. Collection. 
Chief Distinguishing Characters. Dark antenna and cornicle and rather 
pale cauda, shapes of the hairs (slender funnel-shaped on vertex with also 1-2 
pointed ones on frontal tubercle and short broad funnel-shaped ones on dorsum 
of body), small size of body (abzut 1.30 and not over 1.55), shape and length of 
cornicle (slightly clavate and about the same length as III), cauda tapering, with 
not more than 3 lateral hairs, length of unguis (more than 4 times base of VI) 
and shape and length of rcstral IV+-V (with needlelike tip, .14-.15 long). 
