mex, 20] ENTOMOLOGICAL NEWS 21g 
This beautiful little fly is respectfully dedicated to its col- 
lector, Sefor Charles Bruch, to whom I am greatly indebted 
for many Argentinian Tipulidae. 
Holorusia catamarcensis new species. 
Antennae naked, the basal half yellow, the distal half passing into 
brown; mesonotal praescutum brownish buff with three conspicuous 
gray stripes that are narrowly margined with dark brown, the median 
stripe bisected by a narrow line of this color; legs yellow, the tips of the 
femora and tibiae dark brown; wings brownish yellow, the stigma and a 
spot at the origin of Rs darker; abdominal tergites yellow, trivittate with 
dark brown. 
9 .—Length about 19 mm.; wing 20.5 mm. 
Frontal prolongation of head brownish yellow, narrowly dark brown 
laterally; nasus long and slender; palpi dark brown. Antennae with the 
basal seven segments light yellow, the flagellum thence passing into 
brown; flagellar segments cylindrical with microscopic verticils only, as 
in the genus; first flagellar segment very long and slender, nearly as long 
as the succeeding three taken together. Head pale brownish testaceous, 
sparsely gray pruinose. 
Mesonotal praescutum pale brownish buff with three conspicuous gray 
stripes that are narrowly margined with dark brown, the median stripe 
split by a conspicuous brown stripe; scutum pale grayish testaceous, the 
lobes largely gray; scutellum and postnotum testaceous, sparsely whitish 
pruinose, the postnotum with a capillary brown line. Pleura pale brown, 
sparsely pruinose, the dorso-pleural membranes dull yellow. Propleura 
dull yellow, with an indistinct brownish spot above the fore coxa. Hal- 
teres pale, the knobs slightly darker. 
Legs with the coxae yellow, sparsely pruinose; trochanters yellow; 
femora dull yellow, the tips conspicuously dark brown; tibiae similar, 
the tips narrowly darkened; tarsi pale brown, the distal segments darker. 
Wings with a strong brownish yellow tinge, the subcostal cell yellow; 
stigma oval, brown; a brown cloud at the origin of Rs, a brown seam below 
vein Cu; obliterative areas before the stigma in cell rst R2 and across 
cell zst M2, the basal deflection of Mz+2 and the outer deflection of 
M3+4 being largely pale; cell C above the stigma pale; anal cells dark- 
ened distally, cell rst A with a pale triangle at the apex, slightly before 
vein 2nd A; veins dark brown. Venation: Rs rather long, exceeding 
R3, slightly angulated at origin; vein R3 not strongly arcuated; cell 
1st M2 narrow; petiole of cell Mz about one-half as long as m. 
Abdomen yellowish, the tergites trivittate, a narrow brown median 
stripe, the apical segments with the caudal margins narrowly darkened; 
sublateral stripes broader; lateral margins pale gray; second sternite 
with a large brown blotch at the base. Ovipositor with the tergal valves 
long, straight, compressed. 
