SUBFAMILY APHINAE | sare 
Capitophorus spatulavillus Knowlton and Smith 
Capitophorus spatulavillus Knowlton and Smith, 1936e:233. 
Apterous Summer Vivipara. ‘Pale green, appearing white due to numerous fan-shaped 
hairs’; appendages pale with tarsi, tips of tibiae and of rostrum and antenna, beyond 
proximal half of IV, dusky to black. Length of body 1.4-1.7; across eyes~.37-.41; hind tibia 
**'66’’-.70-.90-“‘I’’; antenna 1,60-‘‘1.90’’; rostrum attaining between 2d and 3d coxae. Hairs on 
vertex slender funnel-shaped and stalked; on body the same. but shorter; on antenna, including 
I and II, blunt and minute and on tibiae apparently pointed, reclinate and inconspicuous. 
Cornicle slightly clavate to approximately cylindrical with somewhat oblique tip, sometimes 
both shapes occurring in same individual, as shown in figure. Cauda somewhat spatulate to 
parallel-sided, bearing 2 pairs of lateral hairs and a single dorsal preapical one. 
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RRR AT TETRIS a otc 
z To "40" 45-50 —"60" 
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om .oF Hairs  £y)19~26'Co. Hd. Tib. SD) 
85 Hd. Ta. 
Collections. On Artemisia tridentata and A. sp. Utah: Dry Lake and Ash 
Creek. Idaho: Mink Creek. Apterous viviparae April 25 to Aug. 16; not com- 
mon. . 
Chief Distinguishing Characters. Pale body and appendages, short cornicle 
(half to two-thirds of IV, third to half of distance across eyes), character of 
hairs (stalked funnel-shaped on vertex and body but merely blunt and minute 
on I and II and pointed on hind tibia), short antenna (not longer than body), 
length of III (never longer, usually shorter, than distance across eyes), cylin- 
drical or nearly spatulate cauda with 2 pairs of lateral hairs and characters of 
rostral IV+V (.11-.12 in length and with ventrally needlelike tip). 
Capitophorus sporadicus (Knowlton) n. comb. 
Macrosiphum sporadicum Knowlton, 1935c:135. 
Fundatrix.* Differs from apterous summer vivipara only as follows: More robust body; 
-antennal IV .48-.63, V_ .47-.64; cornicle .70-.75 and pointed hairs on body not evident, It is 
peculiar for the fundatrix to differ in So much shorter antennal IV and V but not III. 
Z s 
.B0-1.10 
Hd.Ta. 
oo 
4 Hairs EES 
2 Z 
A mes tie 
Fig. 326. Capitophorus sporadicus fe 
Apterous Summer Vivipara. ‘‘Apple-green with heavy pruinose covering’’; antenna be- 
yond proximal third of III, distal two-thirds of tarsi and tips of tibiae and of rostrum blackish; 
_anal plate and cauda slightly dusky to pale; tibiae pale. Body length 2.30-3; across eyes 
.53-.60; hind tibia 1.60-2.15-‘'2.34"’; antenna 3.90-4.24, sensoria unusually small; rostrum acute 
attaining 2d coxa. Ocular'‘tubercle rudimentary or lacking. Hairs slightly capitate on vertex, 
antenna and hind tibia; on body funnel-shaped, also often with a few scattered blunt to pointed 
hairs. Cornicle slender,-slightly clavate and imbricated. Cauda rather stout, tapering beyond 
slight neck, with blunt tip and bearing 5-7 lateral and dorsolateral hairs on each side and a 
single preapical one. 
*There is only a strong probability that these specimens are fundatrices of this species; 
it has not yet been biologically proven. 
