Aeolidiella alderi from Tunisia

April 22, 2003
From: Anis

Dear Bill,
Can you identify this nudibranch from Tunisia, North Africa, please.

I found them in the coastal lagoon, Lac de Tunis, at Tunis. Depth: 0 to 1m. between January and March 2003.


Anis, 2003 (Apr 22) Aeolidiella alderi from Tunisia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Anis,
I am pretty sure this is Aeolidiella alderi but would welcome confirmation from someone with local knowledge. From Bernard Picton's message, I think the most characteristic feature of this species is the much lighter coloured cerata in the anterior rows. This is caused by the absence of the digestive gland in the upper half these cerata, replaced by a much larger cnidosac, used to sting the sea aneomes it feeds on

[As I said in reply to your earlier message, can you please send an email message to me at so I have your correct email address.]

Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Apr 22). Comment on Aeolidiella alderi from Tunisia by Anis. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Aeolidiella alderi

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