30 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 62. 
EPOMYIA PICTIPENNIS (Wiedemann). 
Plate 4, figs. 20, 22, 28, 34, and 36. 
1821. Thereva pictipennis WIEDEMANN, Dipt. Exot., p. 113. 
1869. Psilocephala erythrura Loew, Berlin. Ent. Zeitschr., vol. 13, p. 172. 
Male.—Length6 to7 mm. Frontal triangle and face silvery white, 
the upper corner of triangle velvet black. Antennae slender, cylin- 
drical, the third joint slightly longer than the two first combined, with 
short hairlike bristles (see fig. 36); the first two joints yellowish, the 
third yellowish brown. Pile of head short, whitish; that on the palpi 
very sparse. 
Thorax blue-gray pollinose; base of scutellum whitish, the rest 
velvet black; the usual black stripe inside of the humeri. Bristles of 
the scutellum short, erect, black. Halteres black, the stem paler. 
Pleura with scant white pile. 
Abdomen silvery white tomentose above, the ground color black, 
thinly gray pollinose. Genitalia reddish yellow, with yellow pile 
above, some black below. Legs blackish brown, with white pile on 
the femora and coxae; four hind tibiae and the two basal joints of the 
hind tarsi yellowish. Wings hyaline (said to be pale yellowish in fresh 
specimens); stigma and veins brown; vestiges of two blackish bands, 
one near the tip of wing, the other near the middle; ce!! M-3 closed 
and long petiolate. 
Female.—Length 7 to9 mm. Resembling the male in most char- 
acters. Upper part of frons and the ocellar tubercle shining black, 
the lower part silvery white pollinose, a velvet black spot in the middle 
between the two colors (fig. 20). Face silvery white pollinose; frons 
and face bare of pile; top of occiput shining blackish, the rest whitish 
pollinose with very sparse, short white pile. Proboscis and palpt 
black, very short white pilose. 
Thorax colored as in the male; blue-gray pollinose, the two black 
stripes very definite; in the center between these stripes a narrow 
dark-brown stripe; next to the broad black vittae and along the 
lateral margins of the thorax the pollen is silvery. The white base 
of the scutellum very marked, the rest of the surface-black, as in 
the male. Pile of the thorax mostly black, very minute. Halteres 
as in the male. 
Abdomen a peculiar slate black, the thin covering of gray pollen 
giving a blue tinge; pile very sparse, short whitish on the first three 
segments, denser, and short erect black on the remainder of the ab- 
domen, including the genitalia; circlet of spines on the genitalia yel- 
lowish. Femora dark brown, pile very short, pale, the bristles small 
and black; fore tibiae and tarsi black, the fore metatarsi enlarged as 
in the other species of the genus, the other tibiae except the tips and 
the basal joints of the tarsi yellowish brown. Wings longer than in 
