Is this Hypselodoris purpureomaculosa?

August 1, 2002
From: Shouichi Kato


Dear Bill,
This animal, 40mm in size, were found by my staff member, Shigeru Harazaki, at rocky reef 15m in depth, here at Hachijo Island, Japan. Shigeru said it looks Hypselodoris purpureomaculosa but I'm not sure.

Please advise what do you think.
Best regards,
S. Kato

regulus@edit.ne.jp

Kato, S., 2002 (Aug 1) Is this Hypselodoris purpureomaculosa?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7670

Dear Shouichi,
Although the spots are more red than purple I am pretty sure this is a form of Hypselodoris purpureomaculosa. I have included a close-up of the anterior end because you can see the mantle glands around the mantle border. Gosliner & Johnson (1999) report that in this species the mantle glands are found all around the mantle edge with small elongate ones alternating with even smaller round ones with no apparent change in size. This is most unusual as in most species of Hypselodoris, the posterior mantle glands are usually quite a but larger than any mantle glands found elsewhere around the edge.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Aug 1). Comment on Is this Hypselodoris purpureomaculosa? by Shouichi Kato. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7670

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Hypselodoris purpureomaculosa

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