A new species of Nogunius Jałoszyński (Coleoptera: Staphylinidae: Scydmaeninae: Stenichnini) in Korea

The ant-like stone beetle genus Nogunis Jałoszyński (Staphylinidae: Scydmaeninae: Stenichnini) is reported for the first time in Korea, and a new species, Nogunius oseongensis sp. nov. is described. Photographs and illustrations of the habitus, morphological character, and genitalia of the new species are provided. Nogunius is now represented by two species in Taiwan, five in Japan, and one in Korea, increasing the total number of species of eight. A distribution map, identification key, and checklist of Nogunius species are also provided.