Elysia abei from the Japan Sea

September 22, 1999
From: Shigeru Hayashi


Hello Bill Rudman

Here is our first contribution of Sea Slugs from The Japan Sea.

I think that the Elysia? which was reported by Mr. Ono from Kerama Is is not Elysia abei Baba, 1955(s.s.).

This species is reported from Toyama Bay and is named for my teacher, T. Abe. Elysia abei is mentioned with Elysia amakusana Baba, 1955(s.s.) and Elysia japonica Eliot, 1913 (in the broad sense) in Dr. Baba's 'Opisthobranchia of Sagami Bay Supplement' (Second edition 1990).

It was collected, from the 2 m water depth on August 3, 1985, the body length of 15 mm, in Toyama Bay, Amaharashi on the algae Chaetomorpha. The second photo is of another specimen, the body length of 20mm, 2m water depth on August 12, 1998 in Toyama Bay, Akasaki.

In the coasts of the Central Japan Sea, this species can be generally observed and it has been recorded 228 times since 1950.

Sincerely yours

Shigeru Hayashi
Takaoka Biological Club

jr9dsx@tko.fitweb.or.jp

Hayashi, S., 1999 (Sep 22) Elysia abei from the Japan Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1360

Dear Shigeru,
Thanks very much for the information and photos of Elysia abei. I can see now that it is quite different from Atsushi Ono's animal. If you have photos of other Japanese Elysia and sacoglossans I would be very interested, as colour photos are a much easier way to see similarities and differences than written descriptions, even when they are detailed and meticulous.
Best wishes,
Bill Rudman.

Factsheet

Elysia abei

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