Noumea alboannulata
Rudman, 1986

Suborder: DORIDINA
Family: Chromodorididae


Tropical Indo-west Pacific.


UPPER: Saumarez Reef, Coral Sea, 25mm long alive, October 1983, 10.5m, dislodged from rubble between bommies in the lagoon. PHOTO: I. Loch
LOWER: Suakin, Sudan, Red Sea, 11mm long alive, April 1980 PHOTO: Chris Todd.

The mantle is a translucent pink with a broad cream or off-white marginal band. on the insode edge of the marginal band is a series of reddish purple spots. There is a very distinctive opaque white band in the midline between the rhinophores which splits just behind the rhinophores to form an elongate oval which encircles the gill pocket. The gills and rhinophores are a translucent orange red. In a juvenile animal from the Red Sea the background colours are less intense but the characteristic white ovate ring dominates the colour pattern.

See the Noumea purpurea Colour Group Page to compare this species with others of similar colour.

•Rudman,WB (1986): The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: Noumea purpurea and Chromodoris decora colour groups. Zoological Journal of the Linnean Society 86(4): 309-353.

Authorship details
Rudman, W.B., 1999 (December 5) Noumea alboannulata Rudman, 1986. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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