Halgerda batangas & H. carlsoni from Solomon Ids

January 3, 2001
From: Bruce Potter

Dear Bill,
When I came back from a christmas dive trip, I read Mary Jane's message about Halgerda batangas. I went home and checked what I had on file and discovered that I had H. batangas listed as Halgerda carlsoni.

I took the afternoon off, and visited the site that I frequently find Halgerda. In an area of about 10 square feet I found three Halgerda's. Two were what I now believe to be H. batangas, while the other was a H. carlsoni. The gills and rinophores of the H. carlsoni were much darker than the >H. batangas. Both had a yellow line around the foot. They were at about 16 meters, on rubble. They were all about 40mm in length. I have included photos of the two separately, and one of them together.
They showed no interest in each other.
Regards
Bruce Potter

bruce.potter@adventist.org.sb

Potter, B., 2001 (Jan 3) Halgerda batangas & H. carlsoni from Solomon Ids. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3449

Dear Bruce,
I am glad you can check things out so quickly after they appear on the Forum. It would be interesting to check out the animal you are identifying as H. carlsoni {lower left photo) as it usually has quite distinct small orange spots scattered all over the mantle. These are difficult to see in your photo and appear (see inset) to be short lins rather than spots. This might be an optical illusion so if you could check it out I woud be grateful.
Best wishes,
Bill Rudman.

Rudman, W.B., 2001 (Jan 3). Comment on Halgerda batangas & H. carlsoni from Solomon Ids by Bruce Potter. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3449

Factsheet

Halgerda batangas

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