220 ENTOMOLOGICAL NEWS [xxxt) 426 
Habitat: Argentina. 
Holotype, 29, Esquina Grande, Catamarca, April 7, 1915. 
(P. Jorgensen-Hansen). 
Holorusia jujuyensis new species. 
General coloration dark brownish black, pruinose; nasus bifid; antennal 
segments with short bristles; legs dark brown; wings gray, the veins 
seamed with subhyaline; Rs short, petiole of cell Mz short; abdominal 
tergites reddish brown with sublateral brownish black stripes. 
Length 18 mm.; wing 16 mm. 
Frontal prolongation of the head comparatively short, dark reddish 
brown; nasus broad, distinctly bifid at apex, clothed with long yellow 
bristles; palpi brownish black. Antennae with the first segment dark 
brown, sparsely pruinose; second segment brownish yellow; flagellum 
uniformly brown, the outer segments darker; but ten evident flagellar 
segments, the first segment a little less than the succeeding two taken 
together; flagellar segments cylindrical with comparatively short verticils, 
the first and second flagellar segments with numerous such bristles. Head 
dark brown, narrowly gray along the inner margin of the eyes. 
Mesonotal praescutum grayish brown, with three dull gray stripes 
that are margined with dark brownish black, the median area of the 
sclerite discolored in the unique type; humeral regions and lateral mar- 
gins obscure yellow; scutum blackish with two large gray areas; scutellum 
and postnotum dull gray with a narrow blackish median line. Pleura 
dull gray, indistinctly marked with blackish; a conspicuous whitish area 
on the lateral sclerites of the postnotum, immediately cephalad of the 
base of the halteres. Halteres dark brown, paler basally. 
Legs with the coxae and trochanters dark brown, the former dull gray 
pruinose, remainder of the legs dark reddish brown, the tips of the fe- 
mora, tibiae and all the distal tarsal segments black. 
Wings broad, dull gray, the veins broadly seamed with subhyaline, 
isolating the ground-color to the centers of the cells; a nearly continuous 
subhyaline streak along vein M, passing into cell R near its end, crossing 
cell zst M2 and into cell M4 where it forks before the wing-margin; 
similar forks are found in cells R5, Mz and 2nd M2, leaving gray tri- 
angles in the apices of these cells; stigma large, dark brown; cell R2 pale, 
centered with gray; cell R3 gray, the outer end pale; vein rs¢ A 1s_ bor- 
dered on either side by a broad subhyaline space; veins reddish horn- 
color. Venation: Rs short, a little longer than R2+3; R3 rather strongly 
arcuate; cell zst M2 comparatively broad; petiole of cell Mz short, about 
one-half of m; fusion of Cur and M3+4 punctiform. 
Abdominal tergites reddish brown, with conspicuous, sublateral brown- 
ish black stripes and narrow gray margins; segments narrowly ringed 
caudally with pale; sternites brown, the distal segments more blackish. 
Ovipositor with the tergal valves almost straight, long and slender. 
