Peltodoris rubra in the Indian Ocean

October 3, 2008
From: Philibert Bidgrain

Concerning message #8023:

Dear Bill,

I found in Mayotte a specimen of what I think is Peltodoris rubra. I send you a photo of the characteristic pattern of the underside.

Locality: Mbouénatsa, Less 1 m, Mayotte Island, Indian Ocean, 2 August 2008. Length: 70-80 mm. Photographer: Philibert Bidgrain.

For information we found A similar specimen in Réunion Island
What's your opinion about this identification

All the best
Philibert Bidgrain

Bidgrain, P., 2008 (Oct 3) Peltodoris rubra in the Indian Ocean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Philibert,

Thanks for this record and the photos. It has more black-tipped tubercles than the earlier photos but I suspect your identification is correct. Thanks for the photo showing the colour of the underside, which is often vital for identification. I am not sure of the colour of the underside of Bergh's original specimens, but as Terry Gosliner [#8051] considers Archidoris hawaiiensis Kay and Young, 1970 to be a synonym I had a look at their description. Unfortunately there description of the ventral colour is not very detailed "The foot is white, mottled with purple brown" but at least it is not contradictory. Clearly this is another species we still have much to learn about.

  • Kay, E.A. & Young, D.K. (1969) The Doridacea (Opisthobranchia: Mollusca) of the Hawaiian Islands. Pacific Science, 23(2): 172-231.

Best wishes,
Bill Rudman

Rudman, W.B., 2008 (Oct 3). Comment on Peltodoris rubra in the Indian Ocean by Philibert Bidgrain. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Peltodoris rubra

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