Mesonotura. Acr irregularly in 4 rows. 
Wing. Length in male about 2.3 mm 
(both wings partially crumpled in only 
available specimen, accurate measure- 
ment not possible), 2d costal section 
2.3 times length of fourth. 
Color. Frons dark brown, more 
blackish toward lunule, orbit deeper 
black; gena dark brown, face, palpus, 
and antenna black; mesonotum matt 
blackish gray, side of thorax entirely 
dark; legs black, knee of foreleg 
distinctly yellow, scarcely differenti- 
ated on other legs; squama dark gray, 
margin and fringe black. 
Male genitalia. Aedeagus as in 
figures 1290, 1291, supporting 
sclerites long, diverging, paired 
sclerites each side of ejaculatory 
duct large, curving; ejaculatory duct 
strongly developed, recurving toward 
supporting sclerites; sperm pump 
minute, weakly pigmented. 
Host /early stages. Unknown. 
Holotype m. , North Carolina, Yancey 
Co., Mt. Mitchell, 6,800 ft, 12. VIII. 57 
(J. G. Chillcott); paratype m. , Macon 
Co., Highlands, Wilson's Gap, 3,100 
ft, 25.V.57 (J. R. Vockeroth); both in 
CNC. 
Remarks. This species belongs to the 
C. l uzu lae superspecies and appears to 
be related to C. griff ithsi from 
Colorado in having the frons 
exceptionally broad. Differences in 
the aedeagus of the two species are 
distinctive . 
In the paratype from Highlands the 
frons appears narrower, but this is 
presumably due to the head having 
partially shrunk. 
Chromatomyia monte 11a Spencer, new 
species 
(Figs. 1205, 1206) 
Head. Frons broad, almost 3 times 
width of eye, narrowly projecting 
above eye in profile; 2 equal ors, 1 
strong ori, orbital setulae sparse; 
gena extended at rear, almost 0.5 
height of eye, parafacial prominent, 
occupying more than half distance 
between eye margin and lower margin of 
gena; 3d antennal segment rounded, 
slightly longer than broad, with 
fringe of very fine pubescence. 
Mesonotum. 3+1 dc, acr sparse, in 2 
rows . 
Wing. Length in male 2.6 mm, 2d 
costal section approx. 3 times length 
of 4th (exact measurement not 
possible, as both wings slightly 
crumpled) . 
Color. Frons bright yellow, orbit 
slightly paler; entire hindmargin of 
eye black; gena yellow, face and 
palpus black; 3d antennal segment 
black, 1st and 2d only faintly paler; 
mesonotum and scutellum matt gray, 
side of thorax blackish gray; legs 
black, all knees bright yellow; squama 
gray, margin and fringe black. 
Male genitalia. Aedeagus (figs. 1205, 
1206) with dorsal sclerites widely 
diverging, slender, slightly thickened 
at end; sperm pump small, with narrow, 
curving blade. 
Host/early stages. Unknown. 
Holotype m. , Colorado, Clear Creek 
Co., Mt. Evans, 11,300 ft, wet 
vegetation, 10. VIII. 61 (C. H. Mann), 
in CNC. 
Remarks. Distinctive characters of 
this species are the broad frons and 
relatively long second costal section 
of the wing. The male genitalia are 
diagnostic. 
Chromatomyia nigrella Spencer, new 
species 
(Figs. 1275-1277) 
Head. Frons twice width of eye, not 
projecting above eye; normally 2 equal 
ors (upper shorter on one side in 1 of 
3 specimens seen), 1 strong ori, equal 
to ors , sometimes a weak lower also 
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