Hypselodoris regina from Sth Africa

June 26, 2006
From: Riaan Marx

Hi Bill,
I took this photo of Hypselodoris sp.3. But when I examined the photo on my PC (like so often) I noticed the two critters on the left. (where did they come from?)

Well I had a long look in the forum and could not ID them, so I was hoping you would help me out here with a name. Also, note the texture on the Hypselodoris highlighted by the flash. I don't know if this is the norm, but it is something I have not noticed before.

Locality: Sodwana bay, 9-mile reef, 17.5 metres, South Africa, Indian, 18 June 2006, Rocky reef. Length: 10mm and 45mm. Photographer: Riaan Marx.

Kind regards,
Riaan

rmarx@aasa.co.za

Marx, R., 2006 (Jun 26) Hypselodoris regina from Sth Africa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16962

Dear Riaan,

This is Hypselodoris regina which you have previously noted from Sth Africa [message #13592]. The two animals on the left appear to be Aegires villosus.

The texture highlighted by the flash is quite unusual. If it were a mammal I would suggest it was cold. From my experience, little bumps like this aren't always present on H. regina, but they do occur at times on other species. I am afraid I have no idea of their purpose, if any, or what causes them.

Also visible in the close-up alongside are the discrete spherical mantle glands around the mantle edge. You can see quite small ones on the left hand side, and the outline of much larger ones clustered at the posterior tip of the mantle.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Jun 26). Comment on Hypselodoris regina from Sth Africa by Riaan Marx. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16962

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