Blister beetles are beetles of the family Meloidae, so called for their defensive secretion of a blistering agent, cantharidin. About 7,500 species are known worldwide. Many are conspicuous and some are aposematically colored, announcing their toxicity to would-be predators.

Mylabris is a genus of beetles in the family Meloidae. It is endemic to the Palearctic realm. The species-rich genus Hycleus was historically confused with Mylabris and have their greatest diversity in the Afrotropics.