Colletosia radiata   (Moll,  1803) (Bryozoan)
Organism information awaits expert curation
Class: Gymnolaemata

Size (Zooecium): Length 960 µ; breadth 660 µ.

Zoarium encrusting, zooecia relatively small, distinguished by inter-zooecial grooves giving the zooecia a more or less globular appearance. Front strongly convex. The costae bent in a horizontal angle. Orifice semicircular and small with chitinized operculum. Oral spines present, varying in numbers, usually oral spines in the form of stumps. These spines are placed closely in a semicircle. The costae make the apertural bar oblique, which converge proximally and unite to form an elevated lower lip. This rises to form a pointed mucro. The beaded costae form distinct ridges with serially arranged pores usually increasing in size towards the periphery. The median front often provided with pores. The distal part of the zooecium with two costae often unites to form a continuous ridge. Avicularia vicarious, very variable in form with acute elongated mandible. Ovicells not noticed. Pore chambers present.

Synonym (s)
Colletosia radiata Robertson, 1921
Colletosia radiata Harmer, 1926
Colletosia radiata Osburn, 1950

Common Name (s)
Economic Importance and Threats



• Andaman and Nicobar Islands, Andamans INDIA (Record: 1921)
• Lakshadweep (Lat: 8.25) (Long: 72) INDIA (Record: 1921)
• Lakshadweep (Lat: 12) (Long: 74) INDIA (Record: 1921)
• Bay of Bengal INDIA (Record: 1921)

Literature Source(s)
  • Menon, NR and Menon, NN (2006) Taxonomy of Bryozoa from the Indian EEZ. A monograph Ocean Science and Technology Cell on Marine Benthos, Kochi and Centre for Marine Living resources and Ecology, Kochi 263 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2010-09-30

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