Cuthona purpureoanulata
(Baba, 1961)

Order: NUDIBRANCHIA
Suborder: AEOLIDINA
Family: Tergipedidae

DISTRIBUTION

Described from Japan. Reported here from Hong Kong.

PHOTO

Izu-Osezaki (Suruga Bay, Japan), 28 July, 2001. 2-3M depth. 6-8mm long. Photo: Jun Imamoto.

Grows to about 10mm in length. Charcterised by the bright purple subapical ring on the cerata, and the pair of purple rings on the smooth rhinophores and the oral tentacles.

Reference:
• Baba, K. (1961) Three new species of the genus Catriona from Japan (Nudibranchia - Eolidacea). Publications of the Seto marine Laboratory, 9(2): 121-128, pl 14, 15.

Authorship details
Rudman, W.B., 2001 (July 30) Cuthona purpureoanulata (Baba, 1961). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/cuthpurp

Related messages


Cuthona purpureoanulata from Japan

July 31, 2001
From: Jun Imamoto


Dear Dr.Rudman
I went to Izu-Osezaki (Suruga Bay, Japan) for a diving on July 28, 10:05 a.m. We found this sea slug which is not on the species list. I think it is perhaps a species of Cuthona.

They were found at 2-3M depth and were all around 6-8mm long. (Water temperature is 25-26C degrees.) They were under a stone. I hope that those images help in your research.

Best Regards,
Jun Imamoto

imamoto@wips.co.jp

Imamoto, J., 2001 (Jul 31) Cuthona purpureoanulata from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4964

Dear Jun,
This beautiful little aeolid is indeed a Cuthona. It is Cuthona purpureoanulata, which was first recorded from Japan and has since been reported from Hong Kong.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Jul 31). Comment on Cuthona purpureoanulata from Japan by Jun Imamoto. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4964

Cuthona purpureoanulata f rom Hong Kong

July 31, 2001
From: Bill Rudman & Brian Darvell

To accompany Jun Imamoto's photo from Japan, here is some information and photo on Cuthona purpureoanulata from Brian Darvell's Hong Kong collections.

PHOTO: Kong Chau, NW, 11 April 1983 5-10m, AM C139150. Photo: Bernard Picton.

Hong Kong Collection Records: Kong Chau, NW, 11 April 1983 5-10m, AM C139150., Cock's Head Rock, 7 m. 20 April 1986, AM C150285.

Best wishes,
Bill Rudman & Brian Darvell

Rudman, W.B. & Darvell, B.W., 2001 (Jul 31) Cuthona purpureoanulata f rom Hong Kong. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4967