Re: 'Aeolidia' helicochorda

July 2, 2001
From: Nishina Masayoshi


Dear Bill Rudman, Irina Roginskaya and Richard Willan,

Thank you for your comments on my animal. It's a very difficult to tell what my animal is because my photo is not good.

Rhinophores:
I have expanded a part of the photo. I hope that we can tell that the rhinophores is twisted or the rhinophores have a thin line.

Cerata:
I agree that it's not leaf-like. The cerata of my animal resembles the cerata of the animal identified as Berghia major at:
http://siolibrary.ucsd.edu/slugsite/phil/berghia.html. But the tip of an cerata of my animal is slightly sharp and is white.

About the color of the body of a my animal, I think that the second attached image might helpful. A photo of this is taken only with the camera's builtin flash unit.

Etc:
My animal resembles the animal of a photo in Mr.Ono's book. - Eubranchus sp. on page 159.

I also feel that it is not Burnaia helicochorda. But I want to apologize to Dr.Rudman because you have to say something about my animal with photos which the focus and color does not suit. So I have asked whether I can have the photograph of the animal in the local guide of Mable Island diving to send to you.

Best Regards,
Nishina Masayoshi

nishina@hpe15.wips.co.jp

Nishina, M., 2001 (Jul 2) Re: 'Aeolidia' helicochorda . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4687

Note added 13 Jan 2003: This is almost certainly Facelina rhodopos. See Nishina Masayoshi's message.

Dear Nishina,
Thanks for the further information. I agree its not Burnaia helicochorda - but in the absence of a good photo it was an interesting thought. Thank you for your apology, but it is really not necessary. I want the Forum to be a place where we can all exchange thoughts and ideas. That is going to be very difficult if we are scared of offending each other. I know I am not always right, and when I am wrong I would like to think my colleagues, and friends, would tell me. So please don't ever feel bad if you don't agree with me. Just make sure you tell me.

As to what your animal is, I think we will need to look at its anatomy. In your new photo I can see that the oral tentacles are very long, like the posterior foot. And perhaps the rhinophores consist of rows of fine papillae or have very thin lamellae? It is a bit of a mystery.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jul 2). Comment on Re: 'Aeolidia' helicochorda by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4687

Factsheet

Facelina rhodopos

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