Dec., 1913.] 
The Genus Myiolepla. 
207 
Williston reports three females from Washington and Mount 
Hood, Oregon; Coquillett studied a male collected by Kincaid 
at Virgin Bay, Alaska, and R. C. Osborn took a female specimen 
at Port Renfrew, British Columbia, June 30, 1901. I have used 
the latter in my study of the species. 
Myiolepla nigra Loew. Rather large, black with the exception of 
the middle and posterior feet which are partially white, wing 
hyaline at base, unevenly infuscated on distal half; maximum 
length about 10 millimeters. 
Male: Vertical triangle rather small, shining black, frontal 
triangle and face largely gray pollinose, a patch above the bases 
of the antennae, one on middle of face, including the tubercle 
and extending forward to the oral margin, and the cheeks mostly 
shining black; antennae with third segment rather small, brown, 
arista basal and of the same color as its segment. Thorax with 
white hair, legs shining black with the exception of the first 
three tarsal segments on each which are pale, sometimes the front 
feet are entirely black or the first three segments may be inter¬ 
mediate in color, wings hyaline at base, apical part infuscated, 
but paler along the posterior margin, first posterior cell closed, 
the petiole much less than half as long as the anterior cross-vein, 
second vein abruptly curved at the apex and meeting the costa 
at nearly a right angle. Abdomen shining black, sparsely clothed 
with short hair. 
Female: Colored like the male, except that the front tarsi- 
are uniform black in all the half dozen specimens studied. Eyes 
widely separated, front narrowed above; face not tuberculate, 
gradually concave from bases of antennae to the oral margin. 
Specimens from Medina County, Ohio and from Montreal, 
Canada. Former writers have reported the species from Pennsyl¬ 
vania, New York and North Carolina. 
In Wiener Entomologische Zeitung, Volume I, 1882, pg. 250, 
Dr. E. Becher has described a species of Myiolepta as M. obscura. 
There are pretty strong reasons for believing that this is a synonym 
of M. nigra Lw. I have not been able to procure examples of 
obscura from Europe, so I have made no comparisons of speci¬ 
mens. Becher’s type was procured in Austria. 
Myiolepta strigilata Loew. Smaller, rather robust, uniform 
brown, wings pale yellowish, legs pale from the apexes of the 
femora. Length 5-7 millimeters. 
Male: This sex differs from the same sex in other American 
species studied in having the eyes narrowly separated. Williston 
characterized this species by the luteous spot on either side of 
the face, adjacent to the cheek. In a male before me and in other 
males I have seen, this spot is very obscure, although present. 
The whole face and frontal triangle, except the cheeks and tubercle 
with a narrow extension to the oral margin, is rather densely 
