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Ibalia anceps
Ibalia anceps is a parasitoid wasp in the family Ibaliidae, widely distributed across North America. Adults are active primarily in late May and early June. The species is a specialized parasite of horntail woodwasps in the family Siricidae, most commonly Tremex columba. Females locate host larvae tunneling in dead or weakened deciduous hardwoods and lay eggs on or near the host. The resulting larva initially feeds internally, then exits to complete development as an external parasite.