Cochliomyia hominivorax, the New World screwworm fly, or simply screwworm or screw-worm, is a species of parasitic fly that is well known for the way in which its larvae eat the living tissue of warm-blooded animals. From Wikipedia
Imports have been halted to contain the parasite, with over 100 million sterile flies released weekly alongside fly-factory expansions to protect U.S. cattle.
