Thordisa parva and Jorunna parva

September 10, 2001
From: Nishina Masayoshi

Dear Dr.Rudman,
I think Thordisa parva Baba description and Jorunna parva are the same because both are called "Gomafubiroudoumiushi" in Japanese. I am not sure but I suspect that an animal with white body with scattered black caryophyllidia is also J. parva [see the white animal - Page 107 in Keiu Suzuki's book]. They are similar but the color of the rhinophores and gills are bit different.
rather say, it's a purple-red.

Best Regards,
Nishina Masayoshi

nishina@hpe15.wips.co.jp

Nishina, M., 2001 (Sep 10) Thordisa parva and Jorunna parva. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5239

Dear Nishina,
I should have explained that Thordisa parva and Jorunna parva are the same. Dr Baba originally decided the species belonged in the genus Thordisa but it is now considered to be a Jorunna. I used the name 'Thordisa parva' in my message just to show I was talking about Baba's first description.

The reason I think they are probably all the same is that I have found a very similar range in colour variation here in eastern Australia in what I now think is the same species. It is in the Forum as Jorunna sp. 2.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Sep 10). Comment on Thordisa parva and Jorunna parva by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5239

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