Ruditapes philippinarum   (Adams & Reeve,  1850) (Clam)
Organism information awaits expert curation
Class: Bivalvia

Image copyrights: NARIS

Size: Maximum shell length 8 cm, commonly to 5 cm.

Color: Outside variable, cream to light buff or fawn, uniform or variegated with various patterns of deeper brown. Interior whitish, often more or less stained with purple or brown, mainly posteriorly.

Shell moderately strong and inflated, with a variable shape, generally relatively short for its height, elongate-subquadrate in outline. Umbones low, markedly anterior to midline of shell. Posterodorsal margin feebly arched and gently sloping, meeting the rounded and high posterior margin at an obtuse angle. Anterodorsal margin shorter, straightish to slightly concave, slanting obliquely towards the acutely rounded anterior margin. Ventral margin regularly and broadly rounded. Lunule smoothish, about twice as long as wide, with fine peripheral groove. Escutcheon asymmetrical, more distinct in left valve. Outer sculpture both concentric and radial, more pronounced anteriorly and posteriorly, giving a distinctly latticed and granulated characteristic pattern. Hinge with 3 cardinal teeth at each valve, but without lateral teeth. Pallial sinus deep and rounded, longer than high, nearly attaining mid-length of valves. Internal margins smooth.

Synonym (s)
Tapes denticuata Sowerby, 1852
Tapes ducalis Romer, 1870
Tapes indica Sowerby, 1852
Tapes violascens Deshayes, 1854
Venus philippinarum Adams & Reeve, 1850
Tapes bifurcata Quayle, 1938
Tapes japonica Deshayes, 1853
Tapes philippinarum (Adams and Reeve, 1850)
Tapes semidecussatus Reeve, 1864
Venerupis japonica (Deshayes, 1853)
Venerupis philippinarum (Adams and Reeve, 1850)
Venerupis semidecussatus (Reeve, 1864)
Tapes (Ruditapes) philippinarum (Adams & Reeve, 1850)

Common Name (s)
Economic Importance and Threats
Importance:  Commercial
Cultured:  Yes

Habitat:  Sandy, Muddy, Coastal


• Tamil Nadu, Gulf of Mannar INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Andaman and Nicobar Islands, Port Blair (Lat: 11.67) (Long: 92.75) INDIA
• Andaman and Nicobar Islands, Chidiya Tapu INDIA
• Andaman and Nicobar Islands, Jolly bouy Island (Lat: 11.36) (Long: 92.53) INDIA

Literature Source(s)
  • Subba Rao, NV and Dey, A (2000) Catalogue of marine molluscs of Andaman and Nicobar Islands Occasional paper no 187 Records of the Zoological Survey of India ZSI 1-323 Available at - NCL, Pune
  • OBIS Indo-Pacific molluscan database Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Poutiers, JM (1998) Bivalves FAO species identification guide for fishery purposes. The living marine resources of the western central Pacific. Volume 1: Seaweeds, corals, bivalves and gastropods FAO, Rome 1 686 pp Available at -
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at -
  • NARIS Korean National History Research Information Service Available at -

Page last updated on:2010-06-09

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