43 
Abdomen black, sparsely set with rather long white hairs, 
leaf like expansions of first segment and the venter posteriorly 
silvery white pollinose. Pleura, pectus, and legs bluish gray pol- 
linose, with very sparse whitish hairs. Coxae, trochanters, and 
femora black; anterior knees pale yellow, the basal two-thirds of 
the extensor surface of the anterior tibiae pale yellow and whitish 
pollinose; anterior tarsi black; basal two-fifths of middfe tibiae, 
basal third of middle metatarsi, basal half of hind femora, basal 
two thirds of hind metatarsus, and basal half of the second tarsal 
joint pale yellowish, whitish pollinose. Hind metatarsus straight, 
parallel-sided, about six times as long as broad, and one half wider 
than Second segment, which is hardly wider than the third. Tar¬ 
sal claws trifid. 
Halteres light yellow; costa, subcosta, and radius pale yellow, 
with minute black spines numerous on costa, and sparse on radius. 
Length, 2—3 mm.; wing, 2 1/3—3 mm. 
Female .—Body black. Antennae black or dark brownish, cov¬ 
ered with very short whitish pile; the first two segments paler, the 
first with gray pollinose reflection. Head gray pollinose, the face 
whiter than the front; face about as broad as long, with rounded 
sides and sparse yellowish white hairs; front scarcely hairy, about 
as wide above as the face, and as wide as long, tapering evenly 
to about two-thirds this width below; eye sinus about two-thirds 
as deep as the narrowest part of the front. Palpi black, with 
sparse short pale yellow hairs; second joint much thicker than 
third. 
Thorax bluish gray pollinose, with sparse p^je yellowish vesti- 
ture; as seen from in front the mesonotuni is pollinose with a 

deep acute blackisn numeral notcn; tromgjn& side in certain ligli 
•ilinose 
black; femora and tibiae' wv 
yellow, middle portions oT 
those of the fore legii ep^E 
yellow ; hind tarsi witfflBg 
half of second joint^ES? $ 
tensor surfaces of Af 
about as in the 
at ha sc. 
Halteres cs 
with minute ' 
1 • 
