HELEOMYZID FLIES NORTH OF MEXICO—GILL 587 
mesonotum with a dark brown median vitta; dorsocentrals arising 
from brown spots which may give the appearance of longitudinal 
vittae; propleural bristle strong; mesopleuron with several setae in 
anterior corner, otherwise bare; sternopleuron with a single bristle 
and about four rows of setae extending down the middle to the longer 
hairs and bristles between the coxae. 
Legs yellowish brown; femora slightly thickened and with faint 
grayish pollinosity. 
Wings with distinct infuscations along the anterior and posterior 
crossveins, otherwise hyaline with very faint brownish tinge; distance 
from proximal end of discal cell to anterior crossvein 1.2 times the 
distance from anterior crossvein to distal end of discal cell, measured 
along the fourth longitudinal vein. 
Abdomen reddish orange. 
The distal portion of the epiphallic process is unusually narrow. 
Lenetu.—5.0-6.0 mm. 
Typres.—All males. Holotype: Moscow Mountain, Idaho, 9 Sept. 
1908, “in path near summit.”’ Paratypes: Berkeley, Calif., 2 Sept. 
1939, B. Brookman; Longs Peak trail, Colorado, at timberline, 
11,200-11,300 feet, August 28 (number not clear on label), Cockerell. 
The holotype has been deposited in the U.S. National Museum 
(USNM 65446). The first-mentioned paratype has been deposited 
in the California Academy of Science and the second in the collection 
of the State College of Washington. 
Amocebaleria sabroskyi, new species 
FIGURE 87 
This species can be distinguished with certainty only by the appear- 
ance of the male terminalia, in which the surstylus appears to be very 
much narrowed and shaped like an inverted J, when seen in lateral 
view. 
The type specimen is a male collected at White Pine Hollow, 
Dubuque County, Iowa, 4 July 1949, by Jean Laffoon. The type 
has been deposited in the U.S. National Museum (USNM 65447). 
The Garrett collection contains a specimen (No. 5360) collected on 
Moscow Mountain, Idaho, 17 Apr. 1915, which was labelled glauca 
by Garrett. A single female collected from Northumberland Cave, 
Nye County, Nev., 18 Aug. 1952, is in the U.S. National Museum. 
This female is very similar to the aforementioned males and was 
determined by Mr. Curtis W. Sabrosky as a possible new species. 
I have named the species after Mr. Sabrosky. 
The preceding description of Amoebaleria infuscata, new species, 
will apply equally well to A. sabroskyi, new species, except as follows: 
cheek-eye ratio 0.59; mesonotum with humeri and scutellum yellowed 
