Triad rhinophores of Elysia

May 12, 2009
From: Deng Yan Zhang


Concerning message #17468:

Dear Bill,
This is a interesting Elysia with triad rhinophores. In March 29, 2009 from Antigua I was found in lower tide 0.2 m water, gravel bottom with Penicillus capitatus and Udotea sp. and Halimeda sp.

Locality: St John;s, 0.2 m, Antigua, Caribbean sea, 29 March 2009, lower tide gravel bottom . Length: 14 mm. Photographer: D. Y. Zhang.

The animal with  triad rhinophores is 14 mm, with purplish-brown rings on the rhinophores, in picture another one found in same time at the same area and about similar size, but its without purplish-brown rings on the rhinophores and main colors are green with white vesicles. I am not sure whether it is Elysia papillosa or E. patina? Any directions are welcome.

Best regards,
Deng Y. Zhang

kejushi@hotmail.com

Zhang D.Y., 2009 (May 12) Triad rhinophores of Elysia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22424

Dear Deane,

Another animal to add to the Abnormalities page.

Concerning its identity. As you will see from earlier messages, I am of the opinion that E. patina is unidentifiable since the original description was inadequate. Kathe Jensen discusses the possibility that E. papillosa is really a complex of similarly coloured species. Even if that proves correct it would be confusing to use the name 'E. patina' for one of the unnamed species. If we can't identify it now we shouldn't consider it to be available for use just because we are short of a name.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (May 12). Comment on Triad rhinophores of Elysia by Deng Yan Zhang. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22424

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