notum matt gray; femora blackish gray but yellow on 
apical 3d on p 1, yellow for slightly more than 
femoral width on p 2 and p 3; squama and fringe yel- 
low; wing length from 2.5 mm in male to 3 mm in fe- 
male; male genitalia with aedeagus (fig. 544) 
having long, slender, paired distal tubules, re- 
curved to midpoint of mesophallus. 
Host/Early Stages. Juncus spp. , once recorded from 
J. xiphioides . Larva forming leaf and stem mines, 
pupating internally; details of larva (puparium) 
unknown . 
Distribution. Widespread, recorded by Frick (1959) 
from "many States"; new records: Arkansas, Louisi- 
ana, Texas, Virginia. 
References. Spencer, 1969a: 140; 1981: 170. 
Forefemur yellow only for width of femora 4 
4 (3). Frons entirely yellow C. (!•) temeculensis Spencer 
Synopsis. Frons 1.5 times width of eye, 2 ors, 2 
ori; gena broad, 0.33 height of eye; frons, lunule, 
gena, face, and palpus yellow, 3d antennal segment 
black, 1st and 2d yellowish black; mesonotum gray- 
ish black, weakly shining; legs black but all femora 
with knees bright yellow for slightly more than fe- 
moral diameter; squama yellowish gray, margin and 
fringe dark; wing length from 2.5 mm in male to 2.9 
mm in female, last and penultimate sections of M 3+4 
equal; aedeagus (figs. 545, 546) with distal tubules 
diverging at angle of 90°. 
Host/Early Stages. Unknown. 
Distribution. California. 
Reference. Spencer, 1981: 173. 
— Frons blackish on upper half 
C. (I . ) church i liens is Spencer 
Synopsis. Head (fig. 547) with frons 1.5 times 
width of eye, 2 ors, 2 ori; gena narrow, about 0.17 
height of eye; frons yellow below adjoining lunule 
but above and entire orbit black; gena, face, and 
palpus yellow; 3d antennal segment black, 1st and 2d 
paler, yellowish; mesonotum grayish black; legs 
black but all knees yellow, less conspicuously so on 
midleg and hindleg; squama yellowish gray, margin 
and fringe black; wing length 2. 3-2.7 mm, last sec- 
tion of M 3+4 1.5 times penultimate; male genitalia 
with aedeagus (fig. 548) having distal tubules S- 
shaped in side view, diverging apically, forming 
angle of 90°. 
Host/Early Stages. Unknown. 
Distribution. California; Alaska, Canada, northern 
Sweden, Leningrad area of U.S.S.R. (Spencer, 1976a: 
172). 
References. Spencer, 1969a: 138; 1976a: 172; 1981: 
169. 
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