eye; 3+1 strong dc, prsc equal to dc 3; mesonotum 
deep black, moderately shining; pleura and legs 
black; wing length 2.6-3.25 mm, last section of 
M 3+4 about twice length of penultimate, discal 
cell thus small; male genitalia with aedeagus as 
in figure 460. 
Host/Early Stages. Unknown. 
Distribution. Illinois. 
References. Malloch, 1918a: 132; Frick, 1959: 375. 
Frons strongly projecting above eye 6 
6 (5). Orbit and parafacial only moderately shining 
P. vanduzeei Spencer 
Synopsis. Frons broad, almost twice width of eye; 
2 ors, 4 ori; gena angular, 0.25 height of eye at 
rear; 3d antennal segment rounded, only slight- 
ly longer than broad; mouth margin normal, without 
epistoma; 3+1 strong dc, prsc strong; wing length 
in male 3 mm, last section of M 3+4 twice length 
of penultimate; frons dark brown, orbit more 
black, moderately shining; antennal segments dark 
brown, almost black; legs entirely black; squama 
gray, margin and fringe black; male genitalia with 
aedeagus having distiphallus narrow (fig. 461); 
bladder at base of distiphallus only partially 
divided; basal sclerites entirely fused (fig. 
462). 
Host/Early Stages. Unknown. 
Distribution. California; new record: Colorado, 
Boulder, 1 f., 8. VII. 49 (L. D. Beamer, UKaL). 
Reference. Spencer, 1981: 140. 
Orbit and parafacial brilliantly shining 
1>. confessa Spencer 
Synopsis. Closely resembling P. vanduzeei but only 
3 ori; gena somewhat narrower, 0.33 to 0.20 height 
of eye; frons and all antennal segments black; 
wing length from 3.3 mm in male to 3.5 mm in fe- 
male; male genitalia with aedeagus having disti- 
phallus broad in ventral view; bladder at base of 
distiphallus clearly divided (contrast P. in - 
decora , fig. 460); 2 basal sclerites discrete 
(figs. 463, 464). 
Host/Early Stages. Unknown. 
Distribution. Utah (new record); Canada. 
References. Spencer, 1969a: 105; part 2, p. 271. 
7 (3). 2 ors, 2 ori P. powelli Spencer 
Synopsis. Costa ending at vein R 4+5, outer cross- 
vein lacking; small species, wing length 2. 2-2. 3 
mm; frons twice width of eye, not projecting above 
eye in profile, black, with brownish undertone; 
lunule slightly grayish, orbit and cheeks dis- 
tinctly shining; gena 0.20 height of eye; 3+1 
strong dc ; mesonotum, scutellum, and pleura 
shining black; squama dark gray, margin and fringe 
black; male genitalia with aedeagus as in figures 
465, 466. 
Host/Early Stages. Unknown. 
74 
