THE FLIES THAT CAUSE MYIASIS IX MAN 



129 



pools in the vicinity of Paris. It has been recorded from excrement, 

 cadavers, and the nests of birds and of Hymenoptera. 



This species has been recorded several times as involved in intestinal 

 and aural myiasis. 



Literature. — An account of the biology and life history is given by 

 Lesne (&?, p. 66). 



FANMA CAMCULARIS (Linnaeus) 



The Lesser Housefly 



Fig. 71 



Synonym. — Homalomyia canicularis ( Linnaeus). 



Recognition Characters. — Adult : This is a slender fly. in large part blackish, 

 but with the abdomen usually more or less extensively yellow, the yellow regions 



Figure 



-1. — Fa n n ia ca n icula ri& , 



B' wing. 



A. Adult male 



Figure 7l!. — Fannin canicu- 

 laris. mature larva. (After 

 Hewitt {58, p. 164).) 



being especially prominent in the male and characteristically in the form of three. 

 sometimes four, pairs of spots. The middle tibia of the male is not deformed. 

 The thorax has throe browD stripes, which are fairly evident in unrubbed speci- 

 mens. Length about 6-7 mm. Larva (fig. 72) : The antennalike processes of 

 the prothoracic segment are long and prominent ; the lateral processes are not 

 pectinate, but are spinose on their basal region only; the dorsal processes are 

 similar to the lateral ones and almost as large. The anterior spiracles have five 

 to eight, usually seven, processes; the posterior spiracles are longer and more 

 prominent than in F. .scalaris. Length 5-6, sometimes up to 8 mm. 



Geographical Distribution. — Nearctic Region : Greenland. Alaska. Nova 

 Scotia. Quebec, Ontario, Alberta, Maine. New Hampshire. Vermont. Massachu- 

 setts, Rhode Island, Connecticut, New York, New Jersey, Pennsylvania. Mary- 

 land, District of Columbia, Virginia, North Carolina, Georgia, Florida, Alabama. 

 752113° — 48 9 



