Trogus Panzer, 1806
Trogus is a small but highly distinctive genus, which is easily recognized by the short, convex clypeus, ventrally tapering head, and the blocky metasomal tergites. There are only six species in the Nearctic. Some species are easily recognized based on color alone, like Trogus flavipennis, but other species are extremely difficult to distinguish.
See Wahl and Sime (2006) for a key to species and more detailed overview of Trogus.
Biology
Larval-pupal parasitoids of Papilio swallowtail butterflies.
Diagnosis
- head tapering ventrally
- clypeus narrow and strongly convex
- scutellum with large median projection (strongly elevated above postscutellum)
- metasomal tergites "blocky"
- female metasoma amblypygous