Gymnodoris striata
(Eliot, 1908)

Suborder: DORIDINA
Family: Gymnodorididae


Indo-West Pacific, from Red Sea to Japan.


23mm long, Broadhurst Reef, Townsville, Queensland, May 1974. PHOTOS: Ian Loch.


Gymnodoris amakusana

Widespread Indo-West Pacific species, which is reported to grow to 55mm in length (Johnson & Boucher, 1983). It is characterised by the longitudinal orange lines on the dorsum and the tranverse arrangement of the gills. There is considerable variability in the orange ridges on the body. Animals lacking most of the orange ridging were considered a separate species, Gymnodoris amakusana by Baba recently, but I can find no anatomical differences. Risbec (1928) considered the arrangement of the gills to be sufficient grounds for erecting a new genus Analogium for this species, but this is not followed by most authors, although it is used by Hamatani (1995) and Baba (1996).

•Rudman, W.B., Darvell, B.W. (1990). Opisthobranch Molluscs of Hong Kong: Part 1. Nudibranch Families; Goniodorididae, Onchidorididae, Triophidae, Gymnodorididae, Chromodorididae. Asian Marine Biology, 7: 31-79.
•Hamatani, I. (1995) A new record on Analogium striatum (Eliot, 1908) (Opisthobranchia: Nudibranchia: Gymnodorididae) from southwestern Japan. Venus, (Japanese Journal of Malacology), 54(3): 179-183.
•Baba, K. (1996) Taxonomical change for Gymnodoris striata of Baba, 1937 (Nudibranchia: Gymnodorididae) from Amakusana, with a re-description based on some additional specimens from Toyama Bay, Japan. Venus, (Japanese Journal of Malacology), 55(2): 91-95.

Authorship details
Rudman, W.B., 1999 (September 24) Gymnodoris striata (Eliot, 1908). [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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