Limenandra nodosa? from Kerama Island

August 13, 1999
From: Atsushi Ono

Dear Bill,
I would like to thank Clay & Patty Jo for haminoeid species ID.

The other day, I found fascinating aeolid. It has a gray-brown body color. Its bigger cerata has a semicircle blue band. Rhinophores are papillate? 7mm long. This species very rare in Kerama Is. [near Okinawa], in Japan.I saw only one individual at bottom of a bay in May.
Could you help me to identify this aeolid?

Sincerely,
Atsushi Ono

ononini@cosmos.ne.jp

Ono, A., 1999 (Aug 13) Limenandra nodosa? from Kerama Island. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1180

Dear Atsushi,
I think it is Limenandra nodosa. The shape of the rhinophores and the papillate cerata are very similar, and the cerata seem to be arranged in double rows.

Your photo doesn't show the characteristic concentric rings on the dorsum, but they can be absent. I haven't seen a specimen with the blue and yellow markings that your animal has on the inside of the large cerata, but that could be a local variation .... or I could be quite wrong!

If it is Limenandra, your animal is either a juvenile or else it has been damaged (had part of its body bitten off?) and is regrowing.

Best wishes,
Bill Rudman.

Rudman, W.B., 1999 (Aug 13). Comment on Limenandra nodosa? from Kerama Island by Atsushi Ono. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1180

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