Subgenus Achlaenius Manldl, 1992 belonging to the genus Chlaenius Bonelli (1810) of the carabid tribe Chlaeniini. This subgenus was characterized by strong densely pubescent of pronotum and elytra. This subgenus was recorded five species in Korea and Paleoarctic region : Chlaenius micans Fabricius, 1792, C. ocreatus Bates, 1873, C. sericimicans Chaudior, 1876, C. variicornis Morawitz, 1863 and C. kurosawai Kasahara, 1986. However, subgenus Achlaenius was rarely studied in Korea until now because of similar morphological patterns and difficult identification with allied species. As the results, totally four speciesof this subgenus from Korea were reviewed photos of adult and genitalia in male, key to the species of subgenus Achlaenius from Korea