Western Palaearctic Oedicephalini and Phaeogenini(Hymenoptera: Ichneumonidae, Ichneumoninae) in theNational Museums of Scotland, with distributional dataincluding 28 species new to Britain, rearing records, anddescriptions of two new species of Aethecerus Wesmael andone of Diadromus Wesmael

An account is given of approximately 3,250 western Palaearctic specimens, comprising 110 determined species, of the tribes Oedicephalini and Phaeogenini in the National Museums of Scotland. Distributional and phenological data are given for all species, and rearing records are provided for about 50, although not always with the host’s identity fully clear. Twenty eight species are newly recorded from Britain, of which Aethecerus horstmanni sp. nov., Aethecerus ruberpedatus sp. nov. and Diadromus nitidigaster sp. nov. are described and figured. Tycherus histrio (Wesmael, 1848) sp. rev. is raised from synonymy with Tycherus ischiomelinus (Gravenhorst, 1829); Dicaelotus schmiedeknechti nom. nov. is provided for Dicaelotus ruficornis (Schmiedeknecht, 1903) nec (Ashmead, 1890); Aethecerus subuliferus (Holmgren, 1890) is proposed as a comb. nov.; and Phaeogenes nigridens Wesmael, 1848, is proposed as a comb. rev.