Host/Early Stages. Symphoricarpos rivularis . 
Larva forming irregular blotch mine in leaf 
blade, stellate initially (fig. 1287), pupat- 
ing in leaf; puparium yellowish to brown, poste- 
rior spiracles each with 12-14 bulbs. 
Distribution. California, Washington. 
References. Griffiths, 1974a: 53; Spencer, 
1981: 439. 
Larger species, wing at least 1.9 mm long, or, 
if shorter with male genitalia otherwise 108 
108 (107). Gena broad, approx. 0.5 height of eye 
Chroma tomyi a luzulivora Spencer, n. sp. 
Synopsis. Frons brownish black, orbit grayish; 
3d antennal segment small, round, black; meso- 
notum blackish gray, acr in 4 rows; wing length 
2 mm, 2d costal section twice length of 4th; 
male genitalia with aedeagus as in figures 
1288, 1289; sperm pump minute. 
Host/Early Stages. Luzula sp. (assumed from 
male genitalia) . 
Distribution. Colorado. 
Reference. Part 2, p. 327. 
Gena narrower, about 0.33 height of eye 109 
109 (108). Frons exceptionally broad, approx. 3 times width 
of eye HO 
Frons at most twice width of eye 111 
110 (109). 2 ori Chromatomyia mitchelli Spencer, n. sp. 
Synopsis. Agreeing closely with C. grif f ithsi , 
slightly smaller, with wing length in male 
2.3 mm; male genitalia with aedeagus having 
supporting sclerites slender, diverging, not 
developed laterally (figs. 1290, 1291); sperm 
pump minute. 
Host/Early Stages. Unknown, probably Luzula . 
Distribution. North Carolina. 
Reference. Part 2, p. 327. 
1 ori Chromatomyia doolittlei Spencer, n. sp. 
Synopsis. Frons brownish black, 2 equal ors, 1 
ori; gena 0.33 height of eye; 3d antennal seg- 
ment small, round, finely pubescent; mesonotum 
blackish gray, acr in 4 rows; legs with only 
foreknee yellowish; wing length in male 2.6 mm, 
2d costal section about 2.2 times length of 
4th; male genitalia with aedeagus (fig. 1292), 
having supporting sclerites slender but strong- 
ly developed laterally (fig. 1293); sperm pump 
minute (fig. 1294). 
Host/Early Stages. Unknown. 
Distribution. Colorado. 
Reference. Part 2, p. 324. 
111 (109). Male genitalia with aedeagus (fig. 1295) having 
supporting sclerite complex with middorsal hump 
in side view Chromatomyia gregaria (Frick) 
Synopsis. Generally resembling C, fricki but 
slightly larger, wing length (mean) 2 mm in 
male, 2.2 mm in female; 2d costal section nor— 
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