Wikipedia
Myrmecolacidae
The Myrmecolacidae are an insect family of the order Strepsiptera. Four genera and about 98 species are in this family. Like all strepsipterans, they have a parasitic mode of development with males parasitizing ants, while the females develop inside Orthoptera. The sexes differ greatly in morphology, making it very difficult to match females to the better-catalogued museum specimens of males.