Hypselodoris orsinii from Croatia

October 7, 2003
From: Adam Petrusek


Dear Bill,
To accompany my earlier message here is another seaslug from the Adriatic Sea, taken at the unique locality Vrulja on Makarska Riviera, Croatia, on September 16, 2003.

Here is another Hypselodoris(?) on Aplysina cavernicola; depth ~15 m.

Thanks for the help.
Adam

petrusek@cesnet.cz

Petrusek, A,, 2003 (Oct 7) Hypselodoris orsinii from Croatia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11147

Dear Adam,
Like Hypseldoris tricolor in your accompanying message this is another of the 'blue hypselodorids'. I am pretty sure this is Hypselodoris orsinii. Juvenile H. tricolor can look quite like this as well so I can't be 100% sure.

Are you sure of the sponge identification? Ortea et al (1996) report that it feeds on sponges of the genus Cacospongia.

• Ortea, J., Valdés, A. & and García-Gómez, J.C. (1996) Revisión de las especies atlánticas de la familia Chromodorididae (Mollusca: Nudibranchia) de grupo cromático azul. [Review of the Atlantic species of the family Chromodorididae (Mollusca: Nudibranchia) of the blue chromatic group.] Avicennia, 1996, Suppl. 1: 1-165.

Best wishes
Bill Rudman

Rudman, W.B., 2003 (Oct 7). Comment on Hypselodoris orsinii from Croatia by Adam Petrusek. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11147

Factsheet

Hypselodoris orsinii

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