Pelecinus polyturator is a large (up to 7 cm) glossy black wasp, the most common and familiar species in the family Pelecinidae. The adults drink nectar. They live in crop fields, woods, and suburban gardens throughout North, Central, and South America. Their antennae are long and the females have an elongated, cylindrical, articulated metasoma. They are parasitoids that lay their eggs directly into grubs of the June beetle (genus Phyllophaga) buried in the soil.