Re: Hypselodoris tricolor? from Italy

September 28, 2001
From: Juan Lucas Cervera

Dear Bill,
Checking the photos that are integrated in the Sea Slug Forum, I see there is one from the Ligurian Sea attributed to Hypselodoris messinensis by Roberto Moresco. In my opinion, this is a photo of H. midatlantica Gosliner, 1990 [see my message about H. midatlantica and H. tricolor]. During the last 25 years H. fontandraui (Pruvot-Fol, 1951) has often been misidentified as H. messinensis. It seems to me that "messinensis" is a junior synonym of H. villafranca (Risso, 1818). For more information, see Ortea, Valdes and Garcia-Gomez (1996) and Gosliner and Johnson (1999). It would be interesting to know the Terry Gosliner's opinion about these photos.
Cheers.
Lucas.

lucas.cervera@uca.es

Cervera, J.L., 2001 (Sep 28) Re: Hypselodoris tricolor? from Italy. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3912

Thanks Lucas,
I must admit I had left these photos as H. messinensis until I could see a consensus. I still can't see how a photo like 9C in Ortea, Valdes and Garcia-Gomez (1996) - identified as H. fontandraui differs from those in Fig 8 which are identified as H. tricolor. It seems that these beautiful blue chromodorids have almost insoluble nomenclatural problems. I am sure I don't need to tell you that unless taxonomists can develop a stable nomenclature, any comparative studies on their chemistry and ecology are going to be meaningless. I really think there is a need for a group of European workers to prepare a case for the International Commission to suppress or stabilise some of the early names.
Good Luck,
Bill Rudman

Rudman, W.B., 2001 (Sep 28). Comment on Re: Hypselodoris tricolor? from Italy by Juan Lucas Cervera. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3912

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