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(H. Milne Edwards, 1837)

Carapace moderately convergent posteriorly, the entire dorsal surface covered with transverse setose striae, which are more markedly impressed than those of Pachygrapsus minutus. The cervical groove alone is well demarcated on the dorsal surface, the oblique hepatic ones being obliterated. The frontal margin is medially concave, the external orbital angle acuminate and projecting slightly outwards. The arm covered externally with the said setose striae and its inner distal border weakly expanded, serrated into four to five spinules; the wrist with its inner angle produced into a spine and the dorsal surface studded with several sharpish granules. The dorsal surface of palm is covered with numerous studded granules but its outer surface is smooth and traversed by four longitudinal ridges; the fingers are not gaping, the tips hollowed, the movable finger has three granulated ridges on the proximal surface of the dorsal surface. The merus of ambulatory legs is more than half as broad as long, covered with squamiform striae, the posterior distal margin armed with 2 or 3 spinules; the carpus and propodus are slender and furnished with brown setae along both borders. (T. Sakai, 1939: 657)

Type locality: New Caledonia or Hawaiian Islands.
Range: South Africa - Natal (Barnard, 1950); Madagascar - Iles Glorieuses (Crosnier, 1965); Coëtivy Islands (Rathbun, 1911); Mauritius (Bouvier, 1915b); Chagos Archipelago - Peros Coin (Rathbun, 1911); Japan - Okinawa (Stimpson, 1907), Okinawa, Northern Daito-jima and Ogasawara-shoto (Sakai, 1939), Amami-shoto, Ishigaki-jima, Northern Daito-jima and Ogasawara-shoto (Sakai, 1976a), Kushimoto (Miyake, 1983), Takara-jima, Amami-Oshima and Yoron-jima (Muraoka, 1998); Taiwan; China - Paracel Islands (Dai & Yang, 1991); South China Sea - Nansha Islands (Chen & Xu, 1991); Indonesia - Lombok (Tesch, 1918a); New Caledonia; Hawaiian Islands - (Sakai, 1939, Edmondson, 1959), Sandwich Island (Dana, 1852), Kailua and Hilo (Rathbun, 1906); Line Islands - Palmyra and Tabuaeran (Edmondson, 1923).

Pachygrapsus plicatus