A review of the palaearctic ichneumon flies of the genus Baeosemus Foe
rster is given. Four species were noted: B. dentifer sp. n. from Swede
n and Central Russia, B. ibericus sp. n. from Spain, B. mitigosus (Gra
v.) (= B. vulpecula Holmgr.) and B. oenescens (Thoms.); a lectotype of
the latter species is designated.