Actinoptychus splendens   (Shadbolt) Ralfs ex Pritchard,  1861 ()
Organism information awaits expert curation
Class: Bacillariophyceae

Image copyrights: Alexandra

Size: Diameter 80-180 ┬Ám.

The valve outline is circular. A large central space (not areolate) is often present. This can be circular or stellate. The valve structure is complex and consisting of two layers: one consisting of large hexagonal areolae and a second consisting of smaller, fine areolae. The valve face has 18-20 sectors with alternating raised depressed areas. The morphology of raised and depressed areas is different with the raised sectors displaying a central hyaline line from the valve centre towards the margin. It terminates in a labiate process.

Synonym (s)
Actinoptychus halionyx Grun., 1868
Actinosphaeria splendens Shadbolt, 1854
Actinoptychus quatuordenarius Ehrenberg, 1854
Actinoptychus halionyx Grunow, 1870

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Tamil Nadu, Off Tuticorin (Lat: 8.71) (Long: 78.2) INDIA (Record: 1987-1989)
• South West Coast INDIA

Literature Source(s)
  • Subramanian, SK and Krishnamurthi, MS (1997) Studies on the species composition of neritic diatoms in the aquatic realm off Tuticorin Coast in the Gulf of Mannar-Bay of Bengal Seaweed Research and Utilisation Seaweed Research and Utilisation Association 19(1-2) 1-11 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Plankton*Net Data Provider at the Alfred Wegener Insitute for Polar and Marine Research Available at -
  • (2006) Algaebase Available at -
  • plankton net Available at -
  • Gopinathan, CP (1984) A systematic account of the littoral diatoms of the southwest coast of India Journal of the marine biological association of India The marine biological association of India 26(1&2) 2-31 Available at - NIO, Goa

Page last updated on:2012-02-15

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