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de Haan, 1833

Carapace moderately broad (breadth twice or just less twice length); surface with well defined granular elevations, between which is a fine pile of hairs; all regions discernible; front with 3 teeth, outer pair much broader than the median; antero-lateral borders with 9 teeth, last one very large and directed slightly backwards; postero-lateral junction elevated to form a short ridge bearing an almost right-angled border. Antero-external angle of merus of third maxillipeds rounded. Cheliped merus with postero-distal border bearing 1 spine of very variable shape, anterior border with 3-4 spines; carpus with 2 spines; lower surface of palm granular or with squamiform markings. Posterior border of merus of swimming leg finely serrated. (Türkay 1995)

Postero-lateral junction of carapace angular or spinous; front with 3 teeth; posterior of carapace without spiniform areas; posterior border of arm of cheliped with a single spine; wrist of cheliped with inner spine only. (Davie 1999)

Type locality: Japan
Range: Andaman Islands (Alcock, 1899a); Japan - (de Haan, 1833), Nagasaki (Sakai, 1939), Kii Nagashima, Kii Minabe, Nagasaki, and Yoron-jima (Sakai, 1976a), Ogasawara-shoto (Takeda, 1977a), Oshima Passage, Amami-Oshima (Takeda, 1989); China - Guangdong (Dai & Yang, 1991); Singapore (Nobili, 1903, Shen, 1937); Philippines; Indonesia - Saparua (Stephenson, 1972a), Kupang, Timor (Stephenson, 1975); Australia - Exmouth Gulf and Cygnet Bay, W.A., Cape York, near Direction Island, Booby Island and Batt Reef, Queensland (Stephenson & Campbell, 1959); 15-35 m.

Portunus tenuipes