Definition of Empididae
: a large family of small predaceous brachycerous flies that fly in swarms with a dancing movement in the mating season, the males of many species courting the females with prey cpatured in silken balloons or webs produced from silk glands on their forelegs
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Origin and Etymology of empididae
New Latin, from Empid-, Empis, type genus (from Greek empid-, empis mosquito, gnat) + -idae
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