Distribution of Thereuonema tuberculata (Wood, 1862) (Chilopoda, Scutigeromorpha, Scutigeridae) in Hokkaido, Japan

Thereuonema tuberculata (Wood, 1862), a centipede, is distributed mainly in Asia. In Japan, T. tuberculata is found throughout Honshu Island and southwards, although less commonly to the north on Hokkaido. Our survey additionally showed that this species occurs commonly at altitudes of 0–540 m on Hokkaido. The northern limit of this species in Japan seems to be Nakagawa Town, Hokkaido. Thereuonema tuberculata was also collected on isolated islands off southwestern Hokkaido. Although previous studies have suggested distribution of T. tuberculata in Hokkaido is anthropogenic, it may be natural