Dirona aurantia from South Korea

July 2, 2005
From: Dong Bum Koh

Note added December 2006: This species is now known as Dirona pellucida Volodchenko, 1941.

Dear Bill,

This is a photo of what I think is Dirona aurantia from South Korea. We are not sure however whether this animal is Dirona aurantia or D. albolineata. Could you make a decision for us?

Locality: Sa Cheon Beach. Kwang Won Prov., South Korea. Depth: 10 m. Length: From 35mm - 70mm. 26 June. 2005. Photographer: Im Sung Hwang

Best regards,
Dong Bum Koh

drkoh@seasee.co.kr

D. B. Koh, 2005 (Jul 2) Dirona aurantia from South Korea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14155

Dear Koh,
I am not an expert on Dirona but I think you are right in thinking this is a pale D. aurantia. One of the characteristics of D. albolineata is a white line, as its name suggests around the edge of the foot and head. The only bit of the foot I can see is in the photo alongside, and there is no sign of a white line present.

I note that D. albolineata and D. picta have been reported from the NW Pacific, so your find may be a new geographic record for the species previously known only from the NE Pacific. I will be intersted in comments from our colleagues on the Nth Americam west coast who are more familar with this group.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jul 2). Comment on Dirona aurantia from South Korea by Dong Bum Koh. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14155

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Dirona pellucida

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