BioStor
 | A revision of the genus Cryptus Fabricius s. str. in the western Palearctic region, with keys to genera of Cryptina and species of Cryptus (Hymenoptera, lchneumonidae G V Rossem (1969) Tijdschrift Voor Entomologie 112: 299-374 |
 | 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 |