Chromodorid from New South Wales

February 12, 2000
From: David & Leanne Atkinson

Hi Bill,

Lots of nudis around at the moment !

Leanne & Janalie found the attached fellow last weekend at Halifax Park in 20m. Any ideas ? Seems to have little wings like a Thecacera.

David & Leanne Atkinson

Atkinson, D. & L., 2000 (Feb 12) Chromodorid from New South Wales. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear David & Leanne,
I think this is the photo that Wayne Ellis has identified as Noumea laboutei in his latest Australian Nudibranch News.

It looks superficially like N. laboutei but is either an undescribed species either of the chromodorid genus Diversidoris or possibly a new genus. I have found yellow and a pink colour forms, and like Verconia verconis, which is also variable in colour, it has a reticulate pattern on the mantle similar to that of the sponge it lives and feeds on.

The 'wings' on each side of the body are in fact all that is left of a fairly damaged mantle skirt. In most chromodorids, this part of the mantle would be protected by mantle glands, but interestingly in this genus, as you can see in the photo, the mantle glands are quite a distance in from the mantle edge.

Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Feb 12). Comment on Chromodorid from New South Wales by David & Leanne Atkinson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Chromodorid sp. 1.