screwworm

English
A screwworm (Cochliomyia hominivorax)

Etymology

screw +‎ worm

Noun

screwworm (plural screwworms)

  1. The larva of the fly Cochliomyia hominivorax (New World screwworm) or Chrysomya bezziana (Old World screwworm). The larva can be parasitic in humans and animals and are distinctive in eating living flesh of mammals, unlike most maggots, which eat only dead flesh.
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