List and identification key for the Anomaloninae of the French fauna, with the description of a new species of the genus Therion (Hymenoptera, Ichneumonidae). A list of the Anomaloninae wasps of France is drawn up: 15 genera and 62 species are recorded. Among these, 11 are mentioned for the first time in France: Agrypon brachycerum Hellén, A. hilare (Tosquinet), A. interstitiale Schnee, A. polyxenae (Szépligeti), two unknown species of the genus Agrypon, Barylypa rufa (Holmgren), Erigorgus annulitarsis (Thomson), one unknown species of the genus Erigorgus, Heteropelma grossator Shestakov and Perisphincter gracilicornis Schnee; and a new species is described, Therion acronictum n. sp. In order to identify these species, an illustrated key is provided. For each species, a photography of the habitus, the known distribution in France, hosts and flight periods are given.