Grapsus tenuicrustatus (Herbst, 1783)

[Jn: Oo-iwagani]

— Stimpson (1858, 1907, as G. rudius H. Milne Edwards: Futami Bay, Chichi-jima I.); Matsuura (1894, as G. pusillus De Haan: Ogasawara Is.); Yoshiwara (1901, as G. grapsus Kingsley: Ogasawara Is.): Balss (1922b, as G. grapsus Linnaeus: Ogasawara Is.); Shigei (1970, as G. grapsus tenuicrustatus: Ogasawara Is.); Ooishi (1970, as G. grapsus tenuicrustatus: Miyano-hama and Futami Bay, Chichi-jima I.; Kita Harbor, Haha-jima I.); Imajima (1970: Chichi-jima I.; Haha-jima I.); Sakai (1976, as G. tenuicrustatus: Chichi-jima I.); Takeda & Ueshima (2006: Futami Bay, Chichi-jima I.); Kobayashi & Satake (2009: Sakai-ura, Chichi-jima I.); OIBO (2013, in table 1: Mansaku-hama, Ani-jima I.); OIBO (2014, in table 1: Sakai-ura, Chichi-jima I.); OIBO (2015, in table 1: Kita Harbor, Higashi Harbor and Oki Harbor, Haha-jima I.); MMBS (2016: Ogasawara Is.); OIBO (2016, in table 1: Minami-zaki, Haha-jima I.); OIBO (2017a, in table 1: Muko-jima I.; Nakodo-jima I.; Seihyo Beach, Chichi-jima I.); OIBO (2017b, in table 1: Minami-jima I.)