Echinodictyum longistylum   Thomas,  1968 (Sponge)
Organism information awaits expert curation
Class: Demospongiae

Color: Dark gray when dry, and with leathery consistency,

Body consisting of a flattened stalk, with a number of foliaceous and spatulate branches bearing longitudinal ridges, arising from the distal part of the stalk. Rarely these branches fuse together. Oscules and pores are not visible. Surface hispid due to the presence of long styl es. No differentiation between ectosome and endosome. Pigment granules are abundant in the outer part. Endosome is cavernous. Skeleton consists of main tracts running longitudinally along the stalk and branches. These tracts are not well defined in outline and the connectives, uniting the main tracts, make the entire reticulation rather confusing. Spongin scarce in main tracts but rather abundant in the connectives. Acanthostyles echinate the fibres and are set at an angle. Long styles have their heads buried deep in the main tracts. Small oxeas. Slender, rarely straight. Abundant in the dermal part. Small styles. Hair-like, probably younger forms of the former.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Gulf of Mannar INDIA
• Palk Bay INDIA
• Lakshadweep, Minicoy INDIA

Literature Source(s)
  • (2002) Lakshadweep Islands biodiversity strategy and action plan (Version: 3)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at -
  • Thomas, PA (1968) Studies on Indian Sponges I. Two new species of silicious sponges belonginq to the genera Echinodictyum Ridley and Rhadberemia Topsent Journal of the Marine Biological Association of India Marine Biological Association of India 10(2) 245-249 Available at -
  • Thomas, PA (1980) Demospongiae of Minicoy island (Indian ocean)-Part 2 order Poecilosclerida Journal of the marine biological association of India The marine biological association of India 22(1&2) 1-20 Available at - NIO, Goa
  • Thomas, PA (1989) Sponge fauna of Lakshadweep Marine living resources of the union territory of Lakshadweep: An indicative survey with suggestions for development Bulletin of Central Marine Research Institute CMFRI 43 150-161 Available at -

Page last updated on:2011-04-26

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