﻿AbstractTwo new and very similar species of the genusXynobiusFoerster, 1863 are described and illustrated,X.subparallelusHan & van Achterberg,sp. nov.from Japan (Honshu) andX.setosiscutumvan Achterberg,sp. nov.from Norway. Three species are newly reported from Norway:Xynobiusaciculatus(Thomson, 1895),X.comatus(Wesmael, 1835), andX.polyzonius(Wesmael, 1835).X.polyzonius(Wesmael, 1835) andX.sapporanus(Fischer, 1963) are new combinations. Identification keys to theXynobiusspecies known from Norway and Japan are added.