Oxynoe viridis & Lobiger viridis the same?

July 13, 1999
From: Karen Gowlett-Holmes

Dear Bill,
    
Are Oxynoe viridis and Lobiger viridis the same thing? I have often found what we have been calling the former living on Caulerpa cactoides in South
Australia.
    
Best wishes,
Karen 

Karen Gowlett-Holmes
Invertebrate Manager
CSIRO Division of Marine Research
GPO Box 1538
Hobart, Tasmania,
Australia, 7001

Karen.Gowlett-Holmes@marine.csiro.au

Gowlett-Holmes, K., 1999 (Jul 13) Oxynoe viridis & Lobiger viridis the same?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1058

Dear Karen,
I have posted pictures of Oxynoe viridis .. about time I had this common shelled sacoglossan on the Forum. It joins Lobiger viridis which has been there for some time.

They are quite different, the most obvious difference being the four enrolled tentacular 'streamers' off the edge of the parapodia in Lobiger. The shell is much more flattened and reduced in that species as well, but it's not a character you can look at in the living animal. You should be able to identify your animal from these photos. If you'd like to send a photo of it on Caulerpa cactoides it would be a nice addition to the story. It is possible you have Roburnella wilsoni which is an endemic species (and genus) to southern Australian waters, but it is not reported to live on Caulerpa cactoides.

Bill Rudman.

Rudman, W.B., 1999 (Jul 13). Comment on Oxynoe viridis & Lobiger viridis the same? by Karen Gowlett-Holmes. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1058

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