Hypselodoris tricolor from Brittany

September 9, 2009
From: Wilfried Bay-Nouailhat

Concerning message #22641:

Dear Bill,
Here are two pictures of what I think is Hypselodoris tricolor. We saw them in South Brittany (West of France) which is far more in the North than the usual distribution of this species. Could you please confirm this identification ?

Locality: Iles Glenan, 28 m, Brittany, France, Atlantic Ocean, 30 august 2009, Rock. Length: 2.5 -  3 cm. Photographer: Wilfried Bay-Nouailhat.

Best regards
Anne and Willy

contact@mer-littoral.org

Bay-Nouailhat, W., 2009 (Sep 9) Hypselodoris tricolor from Brittany. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22647

Thanks Willy,

Although I am not entirely confident identifying the blue Atlantic chromodorids, this certainly looks like H. tricolor to me. If so, it is certainly a bit further north than normally reported. The white sponge the animals are interested in is certainly a species of Dysidea, and could well be Dysidea fragilis.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Sep 9). Comment on Hypselodoris tricolor from Brittany by Wilfried Bay-Nouailhat. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22647

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