Four new species of the genus Xynobius Foerster (Hymenoptera, Braconidae, Opiinae) from South Korea.

Four new species, Xynobiusazonius sp. nov. , X.brevifemora sp. nov. , X.duoferus sp. nov. , and X.stipitoides sp. nov. , are described and illustrated, and one species X.geniculatus (Thomson, 1895) is newly reported from South Korea. Xynobiusgeniculatus (Thomson, 1895) is redescribed and illustrated, and a new combination, Xynobius (Stigmatopoea) cubitalis (Fischer, 1959), comb. nov. is suggested. An identification key to the Xynobius species known from South Korea is provided.