198 THE BLOWFLIES oF NorTtTH AMERICA 
bristles, these shorter and more closely set apically; middle tibia 
with four anterodorsal bristles, three toward middle and basally 
and one on apical half, this one the strongest, and with two pos- 
terior bristles, one near middle, the other on apical half; hind 
femur with complete rows of bristles on anterodorsal and an- 
teroventral surfaces, a partial posteroventral row of bristles to- 
ward base, and one dorsal apical and one posterodorsal subapical 
bristle; hind tibia with complete anterodorsal and posterodorsal 
rows of bristles and three anteroventral bristles near middle and 
apileally. 
Wing (pl. 9, H) hyaline, lightly infuscated toward base; cos- 
tal sections 2 to 6 in the proportion 81:42:92:40:7; subcostal 
sclerite orange to brown, with fine short white pubescence at base, 
setose apically; remigium bare posteriorly below; third vein setose 
one-half the distance to the anterior cross vein; fourth vein 
angled at about 80 degrees and then curving toward apex of 
wing; anterior cross vein at middle of second section of fourth 
vein; posterior cross vein doubly arcuate; last section of fifth 
vein one-fourth preceding section; upper and lower squamal 
lobes white. 
Abdomen blue black with reddish violet reflections, with thin 
gray pollen; scutellar depression extending four-fifths the dis- 
tance toward the posterior margin of the first sezment; third 
and fourth tergites each with a marginal row of bristles; fourth 
tergite with numerous long setae; first sternite about as long as 
broad; each successive sternite narrower. Fifth sternite (pl. 22, 
D) as illustrated. 
Genital segments about as in Phormia regina. Internal features 
(pl. 22, C and E) as illustrated. 
Female. Head length at vibrissa and at antenna 6.5; eye 
height 8.2; head height 10.0; head width 14.0; bueea 0.22 eye 
height; frontale bare and 0.62 frontal width; front at vertex 
(narrowest) 0.27 head width and 0.34 at lunule; parafrontale 
and parafaciale with silvery pollen, definitely tinged with brown, 
a darker brown or silvery-brown spot opposite lunule; para- 
faciale 0.30 clypeal width; a row of small setae outside frontal 
row; vertex subpollinose; frontal rows strongly divergent an- 
teriorly; outer vertical bristle about two-thirds as long as inner; 
frontoorbital bristles two proclinate and one reclinate. Fourth 
abdominal segment bronze or metallic bronze in color; entire 
abdomen more heavily pollinose and tending more toward bluish 
green than in male. Otherwise similar to male except for normal 
sexual differences. 
Length. T-9 mm. 
