BioStor
 | Additions during 1956 and 1957 to the wasp fauna of Lost River State Park, West Virginia, with biological notes and descriptions of new species (Hymenoptera, Aculeata) Karl V Krombein (1958) Proceedings of The Entomological Society of Washington 60(2): 49-64 |
 | Natural history of Plummers Island, Maryland XVII. Annotated list of the wasps (Hymenoptera: Bethyloidea, Scolioidea, Vespoidea, Pompiloidea, Sphecoidea) K V Krombein (1963) Proceedings of The Biological Society of Washington 76: 255-280 |