934 THE BLOWFLIES oF NortH AMERICA 
Abdomen mostly shining metallic blue green; first segment 
blackish; second segment with faint indication of polished mid- 
. dorsal spot on anterior margin and with a marginal row of 
recumbent bristles the middle pair of which may be slightly 
longer than the others (not to be confused with median marginal 
bristles) ; third segment highly polished apically and with a well- 
developed marginal row of bristles; fourth segment highly pol- 
ished and with seattered black hairs. 
Genital segments black, often slightly metallic greenish on 
dorsum, small, with scattered erect black hair. Internal anatomi- 
eal features ( pl. 24,A,B, and C) as illustrated. 
Female. Head width 14.7; length at antenna and at vibrissa 
6.0; eye height 9.0; head height 11.4; bueca 0.25 of eye height; 
frontale widest at foremost ocellus, gradually narrowing to 
lunule where it is nearly twice as wide as one parafrontale, 
black posteriorly and orange brown anteriorly; front at narrow- 
est (about 1.0 above lunule) 0.25 of head width, 0.29 at vertex 
and 0.28 at antennal base, with some minute tawny-colored setae 
outside frontal row, the foremost of which is sometimes slightly 
anterior to foremost frontal bristle; frontal bristles about seven, 
all strong; parafaciale opposite lunule 1.2 in width; vibrissae set 
2.7 apart; palpus 3.7 in length; antenna with third segment 
4.4 times as long as second; vertex and back of head black, with 
thin whitish pollen and usually slightly metallic bluish-green. 
Wing with squamal lobes white. Otherwise similar to male exeont 
for normal sexual differences. 
Length. 6-9 mm. 
Distribution. Nearetic: Common in southeastern United 
States, particularly from Maryland to Florida, and north to 
Michigan and Wisconsin; less abundant west of the Mississippi 
River. 
Tothill (1913, pp. 254-255) identified the male of Lucila 
oculata Townsend as Lucilia caesar (Linnaeus) and the female 
as Lucila pilatei Hough. He identified the female of Lucilia 
australis Townsend as Lucilia pilatet and the male as caesar. The 
types of Townsend’s two species are caeruleiviridis as I determine 
the species. Lucia caesar of North American authors has usu- 
ally been Luctla alustris. 
Aubertin (1933) stated that the type of caeruleiwiridis in New- 
market is a female, but Macquart indicated that his specimen was 
a male. 
Biology, immature stages, and habits. Egg. Melvin (1934) 
found that eggs of this species did not hatch at temperatures of 
less than 79° F., and at this temperature 11.05 hours were re- 
