(Heller, 1861)
The dorsal surface of the carapace is smooth and naked, the palm of the chelipeds has a crest that is smooth, blunt (rounded) on the superior margin and with the external face rugose and having defined longitudinal furrows; the fingers are grooved and pointed; the fixed finger has its margin cut into regular teeth and, in the male, the black pigmentation extends onto the inferior part of the palm. The ambulatory legs have a low carina on the superior margin. The carapace is violet brown with spots of irregular yellow. (Serène, 1984)
Type locality: Red Sea.
Range: Red Sea (Heller, 1861, Kossmann, 1877), Jiddah (Guinot, 1964b); Persian Gulf (Alcock, 1898); Comoros - Anjouan (Serène, 1984); Madagascar - Tuléar (Balss, 1934b), Nosy Bé (Serène, 1984); Coëtivy Islands (Rathbun, 1911); Mauritius (Bouvier, 1915b, Michel, 1964); Chagos Archipelago (Rathbun, 1911); Sri Lanka - Galle (Alcock, 1898); Sumatra - Banda Aceh; Japan - Ishigaki-jima and Taketomi-jima (Sakai, 1976a); China - Paracel Islands (Chen & Lan, 1978, Dai & Yang, 1991); Malay Peninsula; Vanuatu; Samoa - Upolu.