May 14, 2018 · botfly Any of several families of stout, hairy, black-and-white to grey fly. Its larvae are parasites of livestock, small animals and even humans. Usually eggs are laid on the host and the larvae cause damage to the host's skin or internal systems. The botfly that attacks deer is possibly the world's swiftest insect, flying at 80km/h (50mph).

May 21, 2018 · gad·fly / ˈgadˌflī/ • n. (pl. -flies) a fly that bites livestock, esp. a horsefly, warble fly, or botfly. ∎ fig. an annoying person, esp. one who provokes others into action by criticism.

Aug 24, 2016 · tsetse fly (tsĕt´sē), name for any of several bloodsucking African flies [1] of the genus Glossina, and in the same family as the housefly [2].

When the eggs hatch and become maggots, these live on the flesh until they mature and are able to fly away. Once occupied by the botfly, a human host would be ill advised to squeeze the maggot out, for the maggot is so firmly attached to the flesh of its host that if it is removed, part of it stays behind and rots, leading to infection.