Aeolidiella alderi from UK

August 8, 2005
From: Judith Oakley

Bill,
Please can you help with identification of this sea slug. Could it be Aeolidiella sanguinea?

Locality: Dartmouth Marina, Devon, UK. Length: 7 mm. 29 June 2005. marina pontoon. Photographer: Judith Oakley

Thanks
Judith Oakley

kf1@mba.ac.uk

Oakley, J.A., 2005 (Aug 8) Aeolidiella alderi from UK. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14491

Dear Judith,
Some of these species are difficult to tell apart but when you see a specimen in which the first row of cerata are so distinctly white like this, you can be pretty sure it is Aeolidiella alderi. In this species the cnidosac is much larger in the anterior row and since it fills at least the upper half of each ceras, its translucent white colour gives the anterior cerata their white appearance. In the posterior rows, where the digestive gland duct fills much of the cerata, the ceratal colour is produced by the colour of the digestive gland instead. Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Aug 8). Comment on Aeolidiella alderi from UK by Judith Oakley. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14491

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Aeolidiella alderi

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