Chromodoris rufomaculata? from Sri Lanka

February 19, 2005
From: Marina Poddubetskaia

Dear Bill,
Here is a species from my recent trip to Sri Lanka. I'm hesitating between Chromodoris rufomaculata and Chromodoris alius. From your description on the Forum I feel it is C. rufomaculata, but I'd like it to be confirmed, please.

Locality:  'Cave', Hikkaduwa, Sri Lanka. Indian Ocean. Depth: 8 m. Length: 12 mm. 07 November 2004. found under a rock. Photos: Marina Poddubetskaia - Nembro website

Thank you in advance for your help.
Best wishes,

Poddubetskaia, M., 2005 (Feb 19) Chromodoris rufomaculata? from Sri Lanka. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Marina,
This is Chromodoris alius. Two colour characters distinguish from the similarly coloured species. Just inside the band of purple spots around the edge is a region of the mantle with diffuse yellow spots. The spots over the rest of the mantle are a slightly browner colour and are irregular in size and shape and also seem to be in a sunken pit. In C. rufomaculata all the yellow spots on the mantle are of similar size and colour. This is the first record I know of the species from Sri Lanka.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Feb 19). Comment on Chromodoris rufomaculata? from Sri Lanka by Marina Poddubetskaia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Chromodoris alius

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