Plocamopherus ceylonicus from northern NSW

July 23, 2004
From: Denis Riek


Dear Bill,
Here are two shots of Plocamopherus ceylonicus from the Brunswick River, nthn New South Wales, taken in February 2003. The upper photo is a form I have seen on several occasions and except for this one have all been very small juveniles. Both these animals were approx 25mm and were found in 3-4 metres on internal walls.

The lower photo is the typical colour variety here and shows how well it blends into its surroundings.
Regards,
Denis Riek.

denisriek@hotmail.com

Riek, D., 2004 (Jul 23) Plocamopherus ceylonicus from northern NSW. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12515

Thanks Denis,
I've just included a closeup of part of your 'typical' colour form because if I had reduced the whole photo in size the animal would have been invisible. I'm afraid it's one of the problems with photographing 'camouflage' - If you take a good photo you can't see the object!

In the closeup you can see two of the brownish ball-shaped knobs on the end of the lateral papillae. These are one of the main sources of luminescence when the animal is agitated
Best wishes
Bill Rudman

Rudman, W.B., 2004 (Jul 23). Comment on Plocamopherus ceylonicus from northern NSW by Denis Riek. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/12515

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