Achaeus brevifalcatus Rathbun, 1911

[Jn: Sheisheru-akeusu]

— Miyake & Takeda (1969: Off Muko-jima I., 200m); Komatsu (2011: E Muko-jima I., 152–172 m; W and E Chichi-jima I., 86.9–145.2m; S Nishi-jima I., 60.3–60.7 m; W Minami-jima I., 136–138.2 m)