Facelina auriculata? from Mediterranean

May 18, 2009
From: Dominique Horst


Hi Bill,

Could you please help us about the id of this slug. We initially think about Flabellina lineata, but the line is short and not present along the mantle.
So we are thinking about Facelina bostoniensis, but rhinophores are not ringed, so in the end we arrived to Facelina dubia?

Locality: Thau, 4 m, France, Mediterranean sea, 24 June 2007. Length: 5 cm. Photographer: Elisabeth Juan.

Many thanks in advance,
Kind regards,
Dom

 

dominique.horst@wanadoo.fr

Horst, D., 2009 (May 18) Facelina auriculata? from Mediterranean. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22462

Note added 15 May 2009: This is Facelina bostoniensis. See Greg Brown's message [#22494].

Dear Dom,

I am pretty sure this is Facelina auriculata. I suspect the wrinkles on the rhinophores are not just folds caused by the partial retraction of the rhinophores but are in fact rings. When we add the bluish band on the oral tentacles, the reddish oesophagus we can see just behind the base of the rhinophores, and the first ceratal group on each side being separate from the rest,  it has the main external features of that species.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (May 18). Comment on Facelina auriculata? from Mediterranean by Dominique Horst. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22462

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Facelina bostoniensis

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