Hypselodoris bertschi? from Japan

February 9, 2002
From: Jun Imamoto


Dear Bill,
Are these sea slugs Hypselodoris bertschi? It seems to look like Hypselodoris cf. maculosa, too.
Please, give me advice.

Date: 30 Jun 2001
Place: Hachijo Island, Japan
Depth: 5m
Size: about 30mm
Water temperature: 23C degrees.
Best Regards,
Jun Imamoto

imamoto@wips.co.jp

Imamoto, J., 2002 (Feb 9) Hypselodoris bertschi? from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5490

Dear Jun,
I agree it looks very like Hypselodoris bertschi. Its gills, with an ornage smudge midway and orange tips is identical to the photos of Hawaiian animals. It differs from Hypselodoris cf. maculosa, which has a deep orange band midway up each gill, and no orange tips, and has a blue band the mantle edge. It also agrees with H. bertschi in having small mantle glands packed together all along the edge, down each side of the mantle.

If it is confirmed to be H. bertschi it will be an interesting extension of its range, as it is at present known only from Hawaii.
Best wishes,
Bill Rudman.

Rudman,W.B., 2002 (Feb 9). Comment on Hypselodoris bertschi? from Japan by Jun Imamoto. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/5490

Factsheet

Hypselodoris bertschi

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