eye, not projecting above eye; 2 ors, 
3 ori; gena broad, almost 0.25 height 
of eye, conspicuously extending for- 
ward, forming angle of approx. 45°; 
vibrissal fasciculus not fully fused, 
consisting of bunch of some 10 
bristles (fig. 227); facial keel 
narrow, scarcely raised; 3d antennal 
segment small, round, arista bare. 
Mesonotum. 2 dc, acr in about 8 rows. 
Wing. Length in male 2 mm, C extending 
strongly to M 1+2, last and penultimate 
sections of M 3+4 equal, inner cross- 
vein at midpoint of discal cell. 
Color. Black, mesonotum moderately 
shining; squama pale gray, margin and 
fringe dark. 
Male genitalia. Aedeagus as in 
figures 228, 229; sperm pump with 
blade almost triangular; inner corner 
of epandrium narrow, with some 10-12 
minute bristles. 
Host/ early stages. Unknown. 
Holotype m. , Washington, Spokane Co., 
9 miles from Falls, ex stem of 
Chondrilla juncea , 11. VII. 79 (G. L. 
Piper) , in USNM. 
Remarks. The unique holotype is in 
poor condition, but with the host 
known, its description appears 
justifiable and desirable. 
The male genitalia are remarkably 
similar to those of ^). undecima 
Spencer (1969a: figs. 174, 175) from 
Alberta, but the two species differ 
substantially in external characters. 
Ophiomyia congregata (Malloch) 
(Figs. 184-186) 
Agromyza congregata Malloch, 1913a: 
328. Holotype male from Arizona in 
USNM. 
Ophiomyia congregata, Frick, 1952a: 
382; 1959: 369. 
Ophiomyia pulicar ioides Sehgal, 1968: 
61. Holotype male from Alberta in 
CNC. NEW SYNONYM. 
Ophiomyia decima Spencer, 1969a: 85. 
Holotype male from Alberta in CNC. 
NEW SYNONYM. 
Examination of the holotype of £. con- 
gregata shows it to be the senior syn- 
onym of 0. pulicarioides and 0. decima . 
The distinctive arrangement of strong 
peristomal hairs (fig. 184) makes the 
species readily distinguishable. The 
asymmetrical aedeagus (figs. 185, 186) 
is characteristic of the genus. 
New records. 
Colorado, Clear Creek Co., Mt. Evans, 
Doolittle Ranch, 9,800 ft, 1 m. , 2 
f., 15. VII. -10. VIII. 61 (B. H. 
Poole), in CNC; Grand Co., Granby, 
7,900 ft, 1 f., 15. VI. 61 (C. H. 
Mann), in CNC. 
Three males have also been seen from 
British Columbia, Kootenay District, 
Carbonate, Columbia River, 2,600 feet, 
7-12. VII. 08 (J. C. Bradley), in CUI. 
Ophiomyia eldorensis Spencer, new 
species 
(Figs. 284-286) 
Head (fig. 284). Frons broad, twice 
width of eye, distinctly projecting 
above eye in profile; 2 ors, 2 ori, 
orbital setulae sparse, reclinate; 
ocellar triangle ill defined, apex not 
extending to level of lower ors; gena 
broad, slightly more than 0.25 height 
of eye, forming angle of approx. 80° 
at vibrissal corner; vibrissal 
fasciculus in male short, only 
slightly curving; facial keel broad, 
only moderately raised, without 
ceiitral furrow. 
Mesonotum. 2 dc, acr in 8 rows. 
Wing. Length in male 2.1 mm, C 
extending to M 1+2, last section of 
M 3+4 only slightly shorter than 
penultimate, in ratio 4:5, inner 
crossvein at distal 3d of discal cell. 
Color. Ocellar triangle matt, 
scarcely shining; mesonotum and 
abdomen only moderately shining black; 
254 
