¹ Source: wiktionary.com
Medical Definition of Fleshflies
1. Members of the order Diptera, whose larvae (maggots) develop in putrefying or living tissues. Maggots of the latter group produce myiasis; these include screw-worms (both primary and secondary invaders); wool maggots of sheep; botflies or skin maggots of man and domestic animals (including warble or heel flies); head or nasal botflies of sheep and goats, horses, camels, and deer; and horse botflies (or gadflies) whose larvae develop in the stomach, duodenum, or rectum of horses. (05 Mar 2000)