Stimpson, 1858
Carapace smooth and shiny to naked eye except for distinct raised clumps of granules on branchial regions; front deflexed, constricted between bases of ocular peduncles, with smooth margins, slightly bilobed distally, median furrow distinct; lateral margins posteriorly convergent, 2 well defined and 1 faint antero-lateral teeth. Ocular peduncles long and narrow, cornea extending to tip of external orbital angle and sometimes slightly overreaching it. Central region of epistome with a protuberance. Merus of third maxilliped markedly smaller than ischium. Palm of male cheliped elongate, outer face smooth above longitudinal ridge, heavily granular below, inner face finely granular, no spine near to carpus articulation; immovable finger markedly deflexed in adults, cutting edge with a long, low, crenulate tooth; cutting edge of dactylus proximally with a small quadrangular tooth near base and granules distally. Meri of ambulatory with few fine hairs on upper margins. (Türkay 1995)
Type locality: Okinawa.
Range: Mauritius (Michel, 1964); Andaman Islands (Alcock, 1900b); Burma - Maungmagan near Tavoy (Chopra & Das, 1937); Thailand - Phuket (Komai et al., 1995); Japan - Okinawa (Stimpson, 1858b, 1907, Komai et al., 1995), Iriomote-jima (Sakai, 1976a), ?Misaki (Balss, 1922c), Ishigaki-jima (Miyake, 1983), Okukubi River, Okinawa (Shokita et al., 1998), Ginowan, Okinawa (Shokita et al., 2000); Taiwan - (Barnes, 1970), Lan-Yü (Sakai, 1939), P'eng-hu and Lan-Yü (Lin, 1949), How-Liau, P'eng-hu County (Huang et al., 1992); China - Guangdong including Hainan Island (Dai & Yang, 1991); Hong Kong (Barnes, 1970); Malaysia (Tweedie, 1937, Barnes, 1970); Guam (Komai et al., 1995); Caroline Islands (Ortmann, 1894a); Indonesia - Ambon (de Man, 1888d), Ternate and Halmahera (de Man, 1902a), Ternate (Tesch, 1915), Donggala (Tesch, 1918a), Kepulauan Kai (Barnes, 1970); New Guinea - Kaiser Wilhelms-Land (Ortmann, 1894a), Sekroë (Tesch, 1915); Solomon Islands and Santa Cruz Islands (Barnes, 1967); Vanuatu (A. Milne Edwards, 1867, Barnes, 1967); Torres Straits (Barnes, 1970); Australia - (Miers, 1880b, Boone, 1934), Roebuck Bay and from Cooktown to Port Curtis (Barnes, 1967), Low Isles, Great Barrier Reef (Barnes, 1970); Kiribati (Barnes, 1967); Fiji (Ortmann, 1894a, Barnes, 1967); Hawaiian Islands - Sandwich Island (A. Milne Edwards, 1867); Tahiti (Ortmann, 1894a).