plural noun
The·​rev·​i·​dae | \ thə̇ˈrevəˌdē\

Definition of Therevidae

: a family of chiefly holarctic brachycerous two-winged flies constituted by the stiletto flies

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History and Etymology for Therevidae

New Latin, from Thereva, type genus (from Greek thēreuein to hunt, from thēr wild animal) + -idae

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