Risbecia tryoni from Indonesia

December 10, 2009
From: Mónica Alonso

Hello Bill:

Here you are a sea slug found in Bunaken National Park in Sulawesi, Indonesia.

We don´t know which of this species is:

Risbecia tryoni
Chromodoris kuniei
Chromodoris geminus
Chromodoris leopardus

Locality: Manado, Bunaken National Park, Sulawesi, 10-12 m, Indonesia, Indo Pacific, 6 April 2007, Muddy. Length: 20-25 mm. Photographer: Mónica Alonso & Luis Abad.

Thank you in advance.

Mónica Alonso

monicaalonso091170@hotmail.com

Mónica Alonso, 2009 (Dec 10) Risbecia tryoni from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22952

Dear Mónica,

This is R. tryoni. I discuss the differences between these species on the Fact Sheet. In your photo, the best clue is the front end of a second animal at the back of the first one. This behaviour of two or three animals following each other in a line - often touching head and 'tail' - is characteristic of species of Risbecia. Have a look at the Trailing Fact Sheet.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Dec 10). Comment on Risbecia tryoni from Indonesia by Mónica Alonso. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22952

Factsheet

Risbecia tryoni

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