Halgerda tessellata variations

January 4, 2001
From: Scott Johnson

Hi Bill,

Attached are three apparently geographic variations of Halgerda tessellata. E026-1 is from the Marshall Islands, where the two dozen or so specimens observed were colored approximately the same. P026-1 is from Pohnpei in the eastern Carolines, and it was similar in color to one other specimen observed there. S087-2 is from the Solomon Islands, and I saw at least two others there with the same color form. All measured within the 15 to 25mm range.

Scott

johnson@kmr.ll.mit.edu

Johnson, S., 2001 (Jan 4) Halgerda tessellata variations. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3431

Dear Scott,
Thanks for the photos. I also feel that these are colour variations of one species. When I catch up with the backlog of messages I'll have a look for a few more colour forms. The Solomon Ids form seems to be the most common one in the South Pacific. I have just seen it again in Lifou and it s not uncommon on the Great Barrier Reef.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jan 4). Comment on Halgerda tessellata variations by Scott Johnson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3431

Factsheet

Halgerda tessellata

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