Review of subfamily Cryptarchinae Thomson, 1859 (Coleoptera: Nitidulidae) in Korea (Part II: Genus Cryptarcha Shuckard, 1839)

Abstract

This study presents a partial revision of the subfamily Cryptarchinae Thomson, 1859 in Korea. In this second part of our revision, we focus on the genus Cryptarcha Shuckard, 1839. One new species, Cryptarcha octopunctatus sp. nov., is described, and two additional species, C. kapfereri Reitter, 1913 and C. inhalita Reitter, 1884, are reported for the first time in Korea. Diagnostic descriptions, photographs of external morphology and genital structures, biological information, and a key to Korean Cryptarcha are provided. Additionally, we present the first description of the larval stage of C. lewisi Reitter. Furthermore, we sequenced the complete mitochondrial genome of C. lewisi, which spans 16,745 bp and includes the typical set of 13 protein-coding genes, 2 rRNA genes, 21 putative tRNA genes, and a control region.