On the little-known weevil taxa (Coleoptera, Curculionidae) described by V. I. Motschulsky from Japan and the taxonomic position of the subgenus Nipponoblosyrus Korotyaev
Lectotypes of Tyloderes nebulosus Motschulsky, 1860, Dermatodes interstitialis Motschulsky, 1866 and Cneorhinus angusticollis Motschulsky, 1866 are designated. New combinations and new synonymies are established: Catapionus nebulosus (Motschulsky, 1860), comb. n. (= Dermatodes interstitialis Motschulsky, 1866, syn. n., = Catapionus gracilicornis Roelofs, 1873, syn. n., = Catapionus subcostatus Formánek, 1922, syn. n.); Dactylotus angusticollis (Motschulsky, 1866), comb. n. (= Blosyrus falcatus Faust, 1882, syn. n., = Blosyrus japonicus Sharp, 1896, syn. n.). Subgenus Nipponoblosyrus Korotyaev, 1996, stat. res. is restored from synonymy and returned to the genus Dactylotus Schoenherr, 1847.