Re: Phyllidiella pustulosa

December 6, 1999
From: Erwin Koehler

Bill,
Again to a photo you identified as Phyllidiella pustulosa,

It has ridges so it is not Phyllidiella pustulosa, which has tubercles in clusters, "amalgamated in juveniles and separated in large animals". Any other idea? I attach a rescanned larger version of the
photo.
Erwin

Medslugs.Koehler@t-online.de

Koehler, E., 1999 (Dec 6) Re: Phyllidiella pustulosa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1641

Dear Erwin,
It certainly isn't a 'typical' P. pustulosa but of the described species it seems the only one that fits. Some of these species are not easy to separate and without a dorsal shot it is difficult to work out the pattern of lines and ridges. Also a close-up of the rhinophores so I can see the colour would certainly help determine the genera. I think the tubercles are in clusters rather than ridges, although the discussion becomes a bit semantic, because Brunckhorst used a photo of mine to illustrate variation in the species in which there was a specimen with quite distinct ridges. (See photo at top of Page). The black rhinophores, which I can see in the larger photo, are a good indication that this is a species of Phyllidiella. The only other likely identification is Phyllidiella granulata but Brunckhorst describes that species to have a grey background colour and white tubercles.

I agree that I am only guessing so if anyone has any suggestions I would be glad of them.

Best wishes,
Bill Rudman.

Rudman, W.B., 1999 (Dec 6). Comment on Re: Phyllidiella pustulosa by Erwin Koehler. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1641

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Phyllidiella pustulosa

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