22O ENTOMOLOGICAL NEWS [XXXI, '2O 



Habitat: Argentina. 



Holotype, 9 , Esquina Grande, Catamarca, April 7, 1915. 

 (P. Jorgensen-Hansen). 



Holorusia jujuyensis new species. 



General coloration dark brownish black, pruinose; nasus bifid; antenna! 

 segments with short bristles; legs dark brown; wings gray, the veins 

 seamed with subhyaline; Rs short, petiole of cell Mi 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 ist M.2 and into cell M4 where it forks before the wing- margin; 

 similar forks are found in cells R$, Mi and 2nd M.2, leaving gray tri- 

 angles in the apices of these cells; stigma large, dark brown; cell R2 pale, 

 centered with gray; cell Rj gray, the outer end pale; vein ist A is bor- 

 dered on either side by a broad subhyaline space; veins reddish horn- 

 color. Venation: Rs short, a little longer than 7?2+j; Rj rather strongly 

 arcuate; cell ist M.2 comparatively broad; petiole of cell Mi short, about 

 one-half of m; fusion of Cui and ^3+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. 



