THE FLIES THAT CAUSE MYIASIS IN MAN 



51 



SARCOPHAGA PLACIDA Aldrich 



Geographical Distribution. — Neotropical Region: Texas (Brownsville), 

 Canal Zone. Panama. 



Pathogenesis. — This species has been recorded as occurring in ne- 

 crotic wound tissue in man in Panama. One case of ear myiasis has 

 been recorded from the Canal Zone. 



SARCOPHAGA PLINTHOPYGA Wiedemann 

 (Fig. 20 



Synonyms. — Sarcophaga robusta Aldrich: Hystricocnema plinthopyga (Wiede- 

 mann! of Townsend's Manual. 



Recognition Characters. — Rather easily recognized by the following combina- 

 tion of characters, there is usually one frontal bristle below the anterior points 

 of the frontalia ; the postsutural dorsocentrals consist of two strong bristles near 

 the scutellum. preceded by about three weaker ones: the hind femur of the male 

 bears short spinelike bristles in several rows on the under side; vein i\ is bare; 

 the hypopygium is red and unusually large, the first segment being especially 

 robust. Length. 9-15 mm. 



Geographical Distribution. — Nearctic Region: Nova Scotia. Maryland, Dis- 



Figuee 20. — Sarcophaga plinthopyga, adult male. 



trict of Columbia. Florida, Kansas. Texas, Utah. Nevada. New Mexico. Arizona. 

 Washington, California. Neotropical Region: Mexico, Baja California. Guate- 

 mala. Costa Rica. Panama. Canal Zone. Bahama Islands. Cuba. Jamaica. Domini- 

 can Republic. Puerto Rico. Leeward Island (St Thomas. Antigua), Barbados, 

 Galapagos Islands. Ecuador. Venezuela. British Guiana. Dutch Guiana, Brazil 

 (southward to Sao Paulo i. 



Pathogenesis. — The larvae differ in their feeding habits and are 

 commonly found on carcasses or as parasites in the bodies of insects. 



