Systematic position of Perkovskius Lafer 1989 (Coleoptera: Leiodidae: Catopocerinae), with description of a second species from the Far East of Russia

The genus Perkovskius Lafer 1989 is placed in Catopocerinae. Two species are recognized, P. ussuriensis Lafer 1989 and P. zerchei n. sp., both from the Far East of Russia. Their morphologies are described, figured and compared to the two related genera: Catopocerus Motschulsky 1870 and Glacicavicola Westcott 1868. Both species differ in the general habitus, the shape of aedeagus and apex of paramere in males, and in the morphology of the VIIIth and IXth abdominal segments (ventrite VIII, spermatheca) in females. Distribution of both species is mapped.