Phyllidiella rudmani? from Solomons

November 19, 2002
From: Bruce Potter

Dear Bill,
Have I finally found Phyllidiella rudmani? I spent a weekend diving in the Russell Islands (Solomon Islands), and on a dive site called Carumolun, I found this fellow at about 12 meters on a vertical wall.

It was about 30mm long.

Bruce Potter.

Potter, B., 2002 (Nov 19) Phyllidiella rudmani? from Solomons. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Bruce,
Full marks for trying. I as I said one other time, it would be really nice if someone could find some unambiguous specimens of P. rudmani. Unfortunately this is not one of them. This is almost certainly Phyllidiopsis krempfi. Although a bit difficult to see in this photo, the black line down each side, join in front of the rhinophores in P. krempfi. Although it is a bit broken in this photo, in P. rudmani the black line on each side runs out and down to the mantle edge anteriorly. Also in P. rudmani the top half of the rhinophore club is black and the lower half is white or pinkish. In this animal, like in P. krempfi the black pigment covers the tip of the rhinophore club and runs down the posterior side, leaving the anterior pink. Also this animal has multicompound tubercles which are whiter at tip, another P. krempfi feature.
Sorry I can't give you better news,
Bill Rudman

Rudman, W.B., 2002 (Nov 19). Comment on Phyllidiella rudmani? from Solomons by Bruce Potter. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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