Cuthona yamasui? - colour variation

January 2, 2003
From: Nishina Masayoshi

Dear Bill,
Those photos I have attached are rather interesting.

The Upper Image was taken by my colleague Moguricho on 25 Sep. 2002, on Hachijo Island, Japan. size about 12mm. This animal and Scott Johnson's animal look almost the same.

The Lower Images were taken by Yasan on our sea slug site. They were taken on 17 Feb, 2002 on Cebu, Philippines. size about 40mm. I have identified the lower right image as Cuthona yamasui , but it has an unbelievable body color, and it is the puzzle for me.
Best Regards,
Nishina Masayoshi

nishina@wips.co.jp

Masayoshi, N., 2003 (Jan 2) Cuthona yamasui? - colour variation. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8726

Dear Nishina,
Thanks for these photos which illustrate the range of colour variation which apparently occurs in this species. The hydroid the bright blue animal is on looks quite like the stinging hydroid Aglaophenia on which this species was first reported. It's possible that the animal in your upper photo, and Scott Johnson's, are a different species, but we would need to look at their anatomy
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Jan 2). Comment on Cuthona yamasui? - colour variation by Nishina Masayoshi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8726

Factsheet

Cuthona yamasui

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