Glossodoris atromarginata
(Cuvier, 1804)

Order: NUDIBRANCHIA
Suborder: DORIDINA
Family: Chromodorididae

DISTRIBUTION

Found throughout the tropical and subtropical Pacific and Indian Oceans.

PHOTO

Upper: Animal with very folded mantle edge, feeding on one of its food sponges, Hyatella intestinalis, Darwin, Northern Territory, Australia, June 1987. AM C153592. Lower left: Animal with only slighly folded mantle edge and pale brown border, from Heron Island, Great Barrier Reef, Queensland, August, 1979. AM C117260. Lower right: Brown coastal Queensland form, Pelorus Is., Qld. July 1983. AM C138747. Photos: Bill Rudman.

This common species ranges in colour from creamy-white to a pale brown. It is characterized by the black line bordering the very sinuous mantle edge, the black edge to the rhinophore pockets, the black rhinophore clubs and the black edging to the simple gills. The gills often rhythmically wave as the animal crawls along. Specimens can reach 60 mm in length. Although this is the most common species of the group it has been shown recently (Rudman 1986a) that there are a number of almost identically coloured species difficult to separate from G. atromarginata externally.

See also Glossodoris sibogae and Glossodoris cf. atromarginata.

  • Rudman, W.B. (1986) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: the genus Glossodoris Ehrenberg (= Casella, H.& A. Adams). Zoological Journal of the Linnean Society, 86: 101-184.

Authorship details
Rudman, W.B., 1998 (April 22) Glossodoris atromarginata (Cuvier, 1804). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/glosatro

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