Phyllidiella rosans? from Indian Ocean [1]

November 8, 2002
From: Marina Poddubetskaia

Dear Bill,
To accompany my other message Here are some photos of the other most common nudibranch of Reunion and Mauritius. I saw these phyllidiids in large numbers in all sites I dived. Under the water, they seem quite different than those I sent separately which were always larger. Is this species Phyllidiella rosans?

Upper Right: October 07, 2002, ‘Le platier de la Pointe au Sel’, St-Leu, Reunion Island, Indian Ocean. 25-30mm at 24m. Lower Left: October 09, 2002, ‘Banc de sable’, St-Leu, Reunion Island, Indian Ocean. 30-35mm at 17m. Lower Right: October 14, 2002, ‘Marengo’, Pereybere, Mauritius, Indian Ocean. 25-30mm at 16m
Photos: Marina Poddubetskaia - Nembro website

Best wishes,

Dear Marina,
Thanks for these photos. The upper and lower right photos are the form of Phyllidiella rosans in which the tubercles are arranged in longitudinal ridges. I am not so sure about the lower left photo. I suspect that is a form of P. zeylanica.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Nov 8). Comment on Phyllidiella rosans? from Indian Ocean [1] by Marina Poddubetskaia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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