1924 ] 
Review of the Dipterous Family Piophilidce 
85 
Coxae black; fronto-orbital weak 14 . 
10. Wings hyaline, veins yellowish 11. 
Wings with dark apical cloud, veins brown; abdomen 
closely and finely scabrous. (Mont., Ida., Wash.) 
liturata M., S. 
11. Sixth segment of male abdomen pruinose; cheeks one-third 
eye-height; base of arista brown; pro pleural bristle 
strong 12 
Sixth segment shining; legs typically wholly yellow except 
tips of tarsi: cheeks less than one-third eye-height; 
arista black; propleural bristle weak. (Mont., Ida., 
Wash.) xanthopoda M., S. 
12. Front legs black except coxae and knees, posterior femora 
mostly black. (Mass., N. Y.) onens M., S. 
At least base of front femora yellow, posterior legs mostly 
yellow 13 . 
13. Legs almost wholly yellow; lower occiput yellow. (Alaska) 
setosa M., S. 
Front legs black beyond middle of femora, excepting knees; 
lower occiput largely black. (Eur.; Wash.) 
pusilla Meigen 
14. Posterior femora and all tibiae yellow, front metatarsi 
merging in color with remaining joints; front reddish 
toward antennae. (Wyo., Mont., Ida., Wash., Cal.) 
nitidissima M., S. 
All femora black except narrowly at knees, first joint of 
front tarsi yellow sharply contrasting with black re- 
mainder: front entirely black. (Ida., Wash.) 
atrifrons M., S. 
Piophila morator, n. sp. 
Male. Length 2.75 mm. Front testaceous, vertex, ocellar 
triangle, upper orbits and occiput piceous black, cheeks, face, 
mouthparts and antennae brown, the antennae appearing velvety 
with cinereous pubescence; a vertical gray pruinose stripe be- 
neath eyes, cheeks at middle one-fourth the eye-height; base of 
arista brown, remainder black; interf rental pubescence distinct 
