Physocephala nigra
Physocephala nigra is a species of fly from the genus Physocephala in the family Conopidae. Their larvae are endoparasites of bumble bees of the genus Bombus. References Parasitic flies Parasites of bees Conopidae Insects described in 1776 Muscomorph flies of Europe Endoparasites Taxa named by Charles De Geer