Morphological characteristics and DNA barcode of Leptaulax koreanus Nomura, Kon, Johki & Lee (Coleoptera, Passalidae), an endemic species of Korea

Abstract Leptaulax koreanus (Nomura, Kon, Johki & Lee), an endemic species of Korea, inhabits only in the Gwangneung Forest in Pocheon, Gyeonggi-do. It was reported as a new species in 1993 by Nomura et al. In this study, its external morphological features were investigated and described, and its DNA barcode was obtained and presented as part of the basic research for the conservation of this species.