著者

Ryohei Sugime Yutaka Okuzaki Katsumi Furuse Osamu Kishida Tohru Naruse

出版者

Carcinological Society of Japan

雑誌

Crustacean Research (ISSN:02873478)

巻号頁・発行日

vol.51, pp.39-45, 2022-07-02 (Released:2022-07-02)

参考文献数

25

被引用文献数

2

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Freshwater crabs of the genus Geothelphusa Stimpson, 1858 were collected from a river on Oshima Peninsula, Hokkaido, northern Japan. They were identified as Geothelphusa dehaani (White, 1847) based mainly on structures of the carapace and the male first gonopods. In the study river, G. dehaani occurred in the upper reach of the main stream and in several tributaries but was not found in the middle reach. The presence of brooding females and many immature individuals suggests that the G. dehaani population is established in the river.