Flies disguised as wasps can't fool birds

Breakthroughs, discoveries, and DIY tips sent every weekday. Despite their bee-like appearance, hoverflies are all buzz, no bite. The harmless insects, more closely related to midges than wasps, imitate their distant stinging cousins with stripes, high contrast colors, and narrow waists. In theory, the "flies in wasps' clothing" use this strategy to ward off would-be predators, without having to pay the cost of evolving venom and an appendage to inject it. The quality of hoverfly mimicry can vary– from detailed disguises to the insect equivalent of slapping on a pair of cat ears for a Halloween party.