Stimpson, 1858
Regions of carapace well defined, covered with coarse dark setae. 2M partly divided into two longitudinally, minutely granulate, granules more prominent laterally. 1P uniformly granulate; sinuous transverse row of adjoining pearliform granules on 2P. Submedian frontal lobes arched, minutely denticulate, separated by 'U'-shaped indentation; lateral lobes triangular, denticulate. Antero-lateral margin quadridentate, teeth multispinose, spines subequal, cornute. Anterior margin of cheliped merus tuberculate, tubercles diminishing in size distally. External surface of cheliped carpus coarsely setose, with cornute conical tubercles, lacking longitudinal furrow parallel with palmar joint. External surface of chela coarsely setose proximally, with conical tubercles proximally, smaller, obsolescent interiorly, lower margin smooth. Pereiopods thickly fringed both with plumose setae and dark coarse setae, merus, carpus prominently tuberculate on superior margin. (Clark & Galil, 1993)
Type locality: Izu Shimoda, Japan.
Range: Andaman Islands (Alcock, 1898); Nicobar Islands; Thailand - Goh Phuket (Clark & Galil, 1993); North Sumatra - Banda Aceh; Cocos Islands (Clark & Galil, 1993); Japan - Shimoda (Stimpson, 1858a, 1907, Sakai, 1939), Amami-Oshima (Ortmann, 1893), Sagami Bay (Sakai, 1965b), Sagami Bay, Shimoda, Kii Nagashima, Kii Minabe, Ashizuri-misaki, and Amami-shoto (Sakai, 1976a), Amakusa (Yamaguchi et al., 1976), Nanki Shirahama (Miyake, 1983), Yokosuka, Shimoda, Ashizuri-misaki, Tosa Bay, Shimabara, Amami-Oshima, and Yoron-jima (Muraoka, 1998); China - Guangxi (Dai & Yang, 1991); Vietnam (Serène & Luom, 1959); Malaysia - Kelantan (Lanchester, 1902), Perhentian Besar, Pangkor Laut, Kelantan, Pulau Aur, and Pulau Tioman (Clark & Galil, 1993); Philippines - Balayan Bay (Serène & Vadon, 1981); Indonesia - Edam Island and Ambon (de Man, 1887d), Jakarta and Ternate (Clark & Galil, 1993); Papua New Guinea; Australia - Queensland (Clark & Galil, 1993); Solomon Islands - (Clark & Galil, 1993), Gizo (Takeda & Nunomura, 1976); New Caledonia (A. Milne Edwards, 1873a, Guinot, 1958, Takeda & Nunomura, 1976, Clark & Galil, 1993); Fiji; Samoa (Clark & Galil, 1993); Hawaiian Islands; Kermadec Islands - Sunday Island and Meyer Island (Chilton, 1911); shallow waters.