Tylodina corticalis? from South Korea

October 26, 2006
From: Dong Bum Koh

Dear Bill,

I have received these unexpected photos from Ok Soo Kim of what I think is Tylodina corticalis.

Locality: Geo Moon Do (Island), 10m, Jeon Nam Prov., South Sea of Korea, 25 August 2006, -. Length: Total length 15mm. Photographer: Ok Soo Kim [www.okscuba.co.kr]

We can see the prominent radial ribbing shell on dosum.

Best regards,
Dong Bum Koh

drkoh@seasee.co.kr

D. B. Koh, 2006 (Oct 26) Tylodina corticalis? from South Korea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17640

Dear Koh,
This is indeed an interesting find. As far as I know it is only the second record of a species of Tylodina from the northwest Pacific. The only other record is the one we have on the Forum from Japan [Tylodina sp. 1 ]. It is possibly  Tylodina fungina from the northeast Pacific, although as you suggest, the radial ribbing on the shell is more similar to T. corticalis from southern Australia. However the shell in T. corticalis can be either smooth or ribbed so it is possible T. fungina has a similar variability. Then again it could be an unnamed species.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Oct 26). Comment on Tylodina corticalis? from South Korea by Dong Bum Koh. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17640

Factsheet

Tylodina sp. 1

Related messages

  1. Re: Tylodina fungina? from Japan
    From: Nishina Masayoshi, September 11, 2002
  2. Tylodina fungina? from Japan
    From: Nishina Masayoshi, July 25, 2002

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