BioStor
 | 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 |
 | A catalogue and reclassification of the Ichneumonidae (Hymenoptera) described by C.G. Thomson M G Fitton (1982) Bulletin of the British Museum (Natural History) Entomology 45(1): 1-119 |