BioStor
 | Revision of the North American species of Ichneumon-flies of the genus Exetastes Gravenhorst R A Cushman (1937) Proceedings of the United States National Museum 84: 243-312 |
 | A catalogue and reclassification of the Nearctic Ichneumonidae (Hymenoptera). Part I Henry K Townes (1944) Memoirs of The American Entomological Society 11(1): 1-477 |