Grapsus tenuicrustatus (Herbst, 1783)
[Jn: Oo-iwagani]
— Nishino-shima-shinto I.* 1) (Takeda & Kurata,1977a). — Minami-Iwoto I.* 2) (Takeda, 1982; Sasakai & Horikoshi, 2008)