This species is known from Japan, where it is found on Honshu, Kyushu, Shikoku, and Awaji, and introduced on Sado Island and Hokkaido (Abe, 2005), as well as Tsushima Island (S. Roy pers. comm.). Distribution in southern Korean Peninsula is reported but not confirmed (Abe, 2005). It is found from sea level to 2,000 m.
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