A new species of Arthromelodes Jeannel from Okinawa-jima, Japan (Coleoptera, Staphylinidae, Pselaphinae).

Abstract

To date, twenty species and subspecies of Arthromelodes Jeannel were known to occur in Japan, distributed in Honsh, Kysh, Shikoku, Yakushima, and Amami Islands. No species have been recorded from central or southwestern Ryky. Arthromelodes tokushigei sp. n., the first species known to inhabit Okinawa Island of the central Ryky is described. This wingless species seems to be restricted to the northern Yambaru forest of Okinawa. In order to facilitate future studies on Arthromelodes and related, poorly-defined genera of Batrisini, detailed morphological documentation of the new species is provided.