SUBFAMILY CALLIPHORINAE 237 
obvious in profile; bueca 0.32 eye height, black, moderately gray- 
ish pollinose, with numerous black hairs, no pale hairs before 
the metacephalie suture; frontale obvious throughout but very 
narrow at narrowest portion of front, dark brown, widening to 
twice width of parafrontale at lunule; front at narrowest 0.05 
head width, 0.16 at vertex and 0.24 at lunule, black, with silvery 
white pollen, and with a few scattered minute black hairs out- 
side frontal row; frontal bristles about 13, the rows extending 
anteriorly to about the middle of the second antennal segment 
and moderately diverging as they follow the margins of the 
frontale; vertex shining silvery over dark brown ground; para- 
faciale opposite lunule 0.9 in width, wider below, with silvery 
pollen; faciale with several rows of short black setae which 
ascend nearly halfway to antennal base; vibrissae 0.6 above 
oral margin and placed 2.3 apart; palpus orange, 3.3 in length; 
antenna with first segment black, second usually orange apically, 
third 3.3 times as long as second and dark brown to black; arista 
dark brown to black, with long dark cilia; back of head black, 
with silvery pollen below, with three or four rows of postocular 
cilia and black hair, some pale hair on the metacephalon. 
Thorax metallic blue green with bronze and purple reflections, 
with thin silvery pollen on dorsum between humeri in certain 
lights and on pleura, with a darker dorsal longitudinal stripe 
laterally to acrostichal row, this extending posteriorly to just 
beyond suture; propleuron with black setae; hindmost preacros- 
tichal and predorsocentral bristles placed 2.8 and 1.2, respec- 
tively, before the suture; hypopleuron with black setae; pro- 
sternum laterally with brown setae; postalar declivity with a 
few black setae in tuft near middle; sclerites at wing-base dark 
brown to black; spiracles with dark brown to black hair; lateral 
postscutellar plates with black setae; under surface of scutellum 
bare in center. 
Legs black; middle tibia with one anterodorsal bristle near 
middle, two posterior bristles, one near basal fourth and one 
near apical third, and one posterodorsal bristle near middle; 
hind tibia with two anteroventral bristles near or slightly beyond 
middle, and two posterodorsal bristles, one near basal fourth 
and one near apical fourth. 
Wing hyaline, brownish basally; costal spine absent; basi- 
costa dark brown to black; subcostal sclerite dark brown to 
black, with numerous black wiry bristles; costal sections 2 to 6 
in the proportion 70:45:90:35:8; third vein setulose from one- 
half to two-thirds the distance to the cross vein; fourth vein with 
rounded angle; apical cross vein nearly straight; anterior cross 
