Phyllidia mimic from sthn Queensland

March 4, 2009
From: Gary Cobb


Concerning message #20053:

Hi Bill and everyone!
After reading message #20053 I thought I would send you my version. We are calling it a juvenile Dendrodoris tuberculosa but there seems to differences. The black line between the foot and mantle and lack of white spots along with black areas between the tubercles. Also it seems that some folk see D. carbunculosa as synonym of D. tuberculosa.

Locality: Mooloolaba, Sunshine Coast, 18 m, Queensland, Australia, Pacific Ocean, 01 March 2009, Subtidal. Length: 18 mm. Photographer: Gary Cobb.

The Forum's thoughts...
Thanks Gary
www.nudibranch.com.au

gary@nudibranch.com.au

Cobb, G.C., 2009 (Mar 4) Phyllidia mimic from sthn Queensland. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22299

Dear Gary,

As I discussed in the message you refer to I cnsider this is probably a juvenile form of D. carbunculosa. There is always a possibility that it, and the similar animals in earlier messages are a distinct species, but if so, I am sure they are not D. tuberculosa.

You mention that 'some folk see D. carbunculosa as synonym of D. tuberculosa'. It is helpful in scientific discussions to have a reference to who such folk are and why they feel that way.  I introduced this old name into modern use in the Forum 10 years ago and discuss the differences between the two species in the two species Fact Sheets. Externally the shape of the dorsal mantle tubercules and their distribution, is quite different, being crowded together in D. tuberculosa and widely spaced in D. carbunculosa. Also, in D. tuberculosa their are large white spots on the underside of the mantle while in D. carbunculosa the underside of the mantle is translucent to opaque white and their are no spots.

I would welcome comments from others.

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Mar 4). Comment on Phyllidia mimic from sthn Queensland by Gary Cobb. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22299

Factsheet

Dendrodoris carbunculosa

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