THE FLIES THAT CAUSE MYIASIS IN MAX 



49 



SARCOPHAGA HAEMORRHOIDALIS (Fallen) 



The Red-tailed Flesh Fly 

 (Fig. 19) 



Synonymy. — Stephanostoma stephanostoma (Lena) of Townsend's Manual. 

 Numerous specific names, including Sarcophaga nurus Rondani and S. georgiana 



Wiedemann, have been used for this species, and it has been placed at one time 

 or another in several genera, including Musca (by Fallen), Bercaea, Pierretia, 

 and Coprosarcophaga (Rohdendorf ) . 



Recognition Characters. — Adult : The frontal bristles extend below the base 

 of the antennae and the rows are divergent ; there are only two well-developed post- 

 sutural dorsocentrals situated close to the scutellum, although there may be 

 three or four additional weak ones anterior to these in the series ; there are no 

 anterior or posterior acrosticals, or at most a very weak pair just in front of 

 the scutellum : median marginals are lacking on the first two abdominal segments. 

 The male hypopygium is reddish yellow, although its first segment is more or 

 less blackened posteriorly ; the hind tibia of the male is fringed with long black 

 hairs. Vein t\ is bare; /v^ has a few setulae at its base. Length 10-14 mm. 

 Larva : The immature stages in this genus are too poorly known to permit the 

 formulation of any diagnostic characters. 



Geographic Distribution. — Nearctic Region : Quebec, Ontario, Alberta, Brit- 

 ish Columbia, New Hampshire, Vermont, Massachusetts, Connecticut, New 



Figure 19. — Sarcophaga haemorrhoidalis, adult male. 



York, New Jersey, Pennsylvania. Maryland, District of Columbia. Virginia. West 

 Virginia, North Carolina, Georgia. Florida, Ohio. Michigan, Indiana. Illinois, 

 Wisconsin, Iowa, Missouri, North Dakota, South Dakota, Kansas. Oklahoma, 

 Texas, Montana, Wyoming, Colorado, Utah, Arizona. Oregon. California. Neo- 

 tropical Region: Honduras. San Salvador, Brazil, Argentina. Palaearctic Re- 

 gion: Ireland, England, Portugal, Spain. France, Netherlands. Italy. Corsica. Sar- 

 dinia, Sweden, Denmark, Germany, Austria, Hungary, Yugoslavia, Rumania. 

 Bulgaria, Greece. European Russia (south and west i . Georgia (Abkhasia, Adz- 

 hariai. Azerbaijan, Armenia. Azores, Canary Islands. Madeira, Morocco, Algeria, 

 Tunisia. Libia, Egypt, Turkey. Dodecanese. Palestine. Arabia. Iraq, Iran, central 

 Asiatic Russia, Turkmen, China (Peiping), northern India (Himalayas); not 

 known to occur in northeastern European Russia. Siberia, or the East Coast 

 Province of Asiatic Russia (according to Rohdendorf). Ethiopian Region: Li- 



752113° — 48 4 



