Hypselodoris fontandraui from Portugal

April 24, 2008
From: Joao Pedro Silva


Dear Bill,

Using Marina Poddubetskaia's table [message #11220] I've tentatively identified these two as Hypselodoris tricolor. One of the individuals appears to have suffered some harm on the mantle.

Locality: Sesimbra, 25m, Portugal, North Atlantic, 19 September 2007, Rocky bottom. Length: 3cm. Photographer: Joao Pedro Silva.

Cheers,
Joao Pedro

jpsilva@uwphotographer.net

Silva, J. P., 2008 (Apr 24) Hypselodoris fontandraui from Portugal. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20801

Dear Joao Pedro,

Although I hesitate to identify the notorious 'blue chromodorids' of your region, I am pretty sure these are Hypselodoris fontandraui. Marina's table is quite a good guide but you could be misled by her table saying H. tricolor  has one median yellow line on the mantle and H. fontandraui has a white one when in fact both species seem to vary in that character. However her description of the gill colour is correct, H. tricolor having one yellowish line on the outside while H. fontandraui has one inner yellow line and two outer lines. You can see these lines quite clearly in the middle photo, which is a close-up. It also shows the tear in the mantle which looks as though it is the result of some physical damage.

Best wishes,
Bill Rudman

Rudman, W.B., 2008 (Apr 24). Comment on Hypselodoris fontandraui from Portugal by Joao Pedro Silva. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20801

Factsheet

Hypselodoris fontandraui

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