Costasiella sp. 3 from Bali
October 28, 2008
From: Supapong Areeprasertkul
I have no idea in which group this stuff would be classified. I tried looking in the book of Helmut Debelius and found no clue.
Locality: Bali, 5 - 8 metres, Puri Jati, Bali, Indonesia, Bali, 16 August 2007, Sandy bottom. Length: 1 cm. Photographer: Supasate Areeprasertkul.
Thanks
Supasate Areeprasertkul
zybersup@gmail.com
Supasate, A., 2008 (Oct 28) Costasiella sp. 3 from Bali. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20529Dear Art,
When you see aeolid-like sea slugs on this type of green algae then they are most likely to be a species of the sacoglossan genus Costasiella. The algae, with a post like 'stalk' and a flattened plate-like 'leaf' is likely to be a species of the green algal genus Avrainvillea.
I am pretty sure your animal is one I am calling Costasiella sp. 3. If you look carefully you can see a number of their spiral egg strings stuck to the algae, including one along the edge of the algae just behind the Costasiella.
Best wishes,
Bill Rudman
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