Re: Elysia sp. 11 from Sulawesi

June 28, 2001
From: Kathe R. Jensen

Dear Bill,
Now that you posted Lindsay's pictures with Elysia sp. 11, I guess I have to say something. Lindsay's latest pictures are definitely Elysia ornata - look at the thin edges of the parapodia, even where the orange band is broad, and even where the parapodial edges are flared. I wasn't quite sure about Erwin's picture, but I think that is also E. ornata. I tried to look for other differences, but could not see anything consistant. E. ornata often has small, thin, white papillae, Elysia sp. 11 appears smooth. Elysia sp. 11 does not have the black line on the parapodial edges, not even interrupted. The black spots of Elysia sp. 11 are usually bigger than those of E. ornata, and they often sit in the center of a larger white spot. I guess we cannot be certain about the identity of Elysia sp. 11 until "it has its teeth examined", to quote Sherman Bleakney.

Best wishes,
Kathe

jensen@ait.ac.th

Jensen, K.R., 2001 (Jun 28) Re: Elysia sp. 11 from Sulawesi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4679

Dear Kathe,
I am happy for you to 'say something' at any time, in fact I urge you to. In this case, without anatomical information it was a 50-50 choice on E. ornata and Elysia sp. 11. It is hard to determine the 'thin-ness' of the parapodia from the photos so I used the way the colour border is broken into three and the parapodial edge folded at these three places. I had never seen Elysia ornata with this character. Lindsay & Erwin, your animals are now on the Elysia ornata page. If anyone has photos of Elysia ornata showing thin parapodia and a broken colour band at the parapodial edge it would be useful addition to the discussion.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jun 28). Comment on Re: Elysia sp. 11 from Sulawesi by Kathe R. Jensen. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4679

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