Juvenile Hexabranchus from Hawaii

July 30, 2001
From: Scott Johnson

Hi Bill,
I'm sure you are correct in your id of Anuschka's dorid as a juvenile Hexabranchus. Attached are three shots of small individuals taken in Hawaii. The smallest (Lower Right Photo) is less than 20mm in length. The other two are both over 30mm. The yellow margin is present in all of them. Although I suspect these are indeed young Hexabranchus sanguineus, a yellow margin was one of the features Ostergaard used in his 1955 paper to distinguish his new species Hexabranchus aureomarginatus. While this species is generally considered yet another form of H. sanguineus, I have some doubts. But I'll put those in a separate message.
Scott

johnson@kmr.ll.mit.edu

Johnson, S., 2001 (Jul 30) Juvenile Hexabranchus from Hawaii. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4952

Dear Scott,
Thanks for this nice series of photos. They certainly show the progression to a more 'Spanish Dancer' looking animal.
Best wishes,
Bill Rudman

Factsheet

Hexabranchus sanguineus

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