50 ; THE FLORIDA ENTOMOLOGIST 
distinguishing Osten Sacken’s species, Dicranomyia immodesta 
and gladiator. Part of the difficulty has been due to the ex- 
istence of a third species, heretofore undescribed, whose geo- 
graphic range and habitat distribution overlaps that of the 
above species. 
Dicranomyia iowensis sp. nov. 
Resembles in venation, size, and general body appearance 
Dicranomyia immodesta and gladiator. Differs from both of 
these species in that the thoracic notum and pleura are opaque, 
the antennae wholly dark brown, and the male genitalia distinct- 
ly different. 
Rostrum straw yellow, tinged with brown at the apex and 
along the sides. Basal half of the first segment of the palpus 
yellow, the distal half and the remaining joints a dull dark 
brown. The antennae are dark brown thruout; the first basal 
joint long cylindrical, the second hardly half as long, the joints 
of the flagellum elliptical, with a few short setae and a thin 
pubescence. The vertex bright chestnut brown with a silvery 
reflection; occiput dark brown with a narrow silvery line along 
the margin of each eye. 
The thoracic notum is a dull yellowish brown except that the 
lateral margins of the prescutum are a light opaque yellow. A 
single central dull brown stripe is well marked on the pronotum 
and anterior half of the prescutum but fades into the ground 
color on the posterior part of the prescutum. The usual position 
of the lateral stripes is frequently indicated by faint darker areas 
on the posterior half of the prescutum. The lobes of the scutum 
are faintly darkened; the scutellum and postnotum are slightly 
duller and darker than the rest of the thoracic notum. The 
pleura are a dull grayish yellow, somewhat lighter dorsally. 
The coxae and proximal halves of the femora are dull yellow, 
the distal halves of the femora and the tibia somewhat darker 
and the tarsi brown. The base and stem of the halters are 
yellow, the knobs dull, dark brown. The wings are entirely 
clear, save for a very faint, small, ovoid brown stigma. The 
veins are brown, the venation (figure IV) quite like that of 
D. immodesta. 
The tergites of the abdomen are dull brown, the sternites yel- 
low, more or less suffused with brown. The margins of the 
sternites are slightly shining. The genitalia of both male and 
female are yellow; altho dull, this yellow is conspicuous in con- 
trast to the brown abdominal tergites. The ninth tergite of the 
