Aplysiopsis nigra
(Baba, 1949)

Order: SACOGLOSSA
Superfamily: LIMAPONTIOIDEA
Family: Hermaeidae

DISTRIBUTION

Known from Japan, and reported on the Forum from Sth Korea..

PHOTO

Moon islet, Sogwipo, Jeju Island, South Korea. Depth: within 10 m. Length: 20 mm. Photographer: Dong Bum Koh

Aeolidiform sacoglossan with a black body and white markings. There is a white patch around each eye and a white line running from the eye patch out along the dorsal surface of each rhinophore. The rhinophores, head and foot are edged with a thin white line and each ceras has two white lines running from the base to the tip, which is capped with white. The rhinophores are auriculate and the cerata cna chnage shape from cylindrical, to a more flattened state in which the upper surface is convex and the lower surface is flattened. The digestive gland duct in the cerata is branched. It grows up to 30 mm in length.

Originally placed in the genus Hermaeina nigra, but from the original description, the albumen gland does not seem to enter the cerata, and the radular teeth are denticulate and sabot-shaped, both characters of Aplysiopsis.

  • Baba, K. (1949) Opisthobranchia of Sagami Bay collected by His Majesty The Emperor of Japan. Iwanami Shoten, Tokyo. 194pp., 50 Pls.
Authorship details
Rudman, W.B., 2005 (March 22) Aplysiopsis nigra (Baba, 1949). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/aplynigr

Related messages


Aplysiopsis nigra (Baba,1949) from Sth Korea

March 24, 2005
From: Dong Bum Koh


Dear Bill,

I read a message about Aplysiopsis nigra from Ron. in Jeju island, Sth Korea [#13382]. I have attached 2 photos of mine of A. nigra from Sogwipo.

Usually they observed within 10m depth on green algae in Jeju area.

Locality:  Moon islet, Sogwipo, Jeju Island, South Korea. Depth: within 10 m. Length: 20 mm. Photographer: Dong Bum Koh

I am happy if they are useful for your Forum.

Best wishes,
Dong Bum Koh

 

drkoh@seasee.co.kr

Koh, D.B., 2005 (Mar 24) Aplysiopsis nigra (Baba,1949) from Sth Korea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13403

Dear Koh,
Thanks for your quick reponse. They are very useful
Best wishes,
Bill Rudman

Distribution of Aplysiopsis nigra

March 22, 2005
From: Ron Noseworthy

Dear Dr. Rudman,
I am studying the opisthobranchs of Cheju Island, South Korea.

I would appreciate it if you could tell me the world distribution of Aplysiopsis nigra (Baba, 1949), and also which family it is placed in. The literature I have consulted disagrees on which family this species belongs to.

Sincerely,
Ron Noseworthy,
Sogwipo, Korea.

globalmark@canada.com

Noseworthy, R., 2005 (Mar 22) Distribution of Aplysiopsis nigra. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13382

Dear Ron,
I don't know much about this species exept for Baba's original description as Hermaeina nigra from Japan. From that description, the albumen gland, does not seem to enter the cerata, and the radular teeth are denticulate and sabot-shaped, both characters of Aplysiopsis. But Kathe Jensen should be able to help. I haven't got any photos of this species, so if you have some I could add to the Forum I would be grateful.

Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Mar 22). Comment on Distribution of Aplysiopsis nigra by Ron Noseworthy. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13382