BioStor
 | Classification of the Ichneumon flies, or the superfamily Ichneumonoidea Willam H Ashmead (1900) Proceedings of the U.S. National Museum 23(1206): 1-220 |
 | Type species of the genera of ichneumon flies H L Viereck (1914) Bulletin of the United States National Museum 83: 1-186 |
 | First supplement to "Type Species of the Genera of Ichneumon-flies" Henry L Viereck (1921) Proceedings of The United States National Museum 59(2364): 129-150 |
 | A review of the generic names proposed for old world Ichneumonids, the types of whose genotypes are in Japan, Formosa or North America H Townes (1957) Proceedings of the Entomological Society of Washington 59: 100-120 |
 | Ichneumon-Flies of America North of Mexico: 1. Subfamily Metopiinae Henry Townes and Marjorie Townes (1959) Bulletin United States National Museum 216(1): 1-316 |