Cicindela-parasite
Guides
Pterombrus rufiventris
Pterombrus rufiventris is a parasitoid wasp in the family Thynnidae, native to North America. The species is notable for its specialized life history as a parasite of tiger beetle (Cicindela) larvae. It is considered rare but has been documented across a wide geographic range from southern California to Texas and eastward to Georgia and Virginia. The species exhibits sexual dimorphism typical of thynnid wasps, with wingless females and winged males. Two subspecies are recognized: the nominate form in the eastern range and P. r. hyalinatus in the western portion of its distribution.