Thorunna montrouzieri
Rudman, 1995

Suborder: DORIDINA
Family: Chromodorididae


Known only from New Caledonia.


Animals (14, 8mm long alive) on food sponge, Koumac, New Caledonia, Oct, 1993.
Photo: Bill Rudman

• Rudman, W.B. (1995) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: further species from New Caledonia and the Noumea romeri colour group. Molluscan Research 16: 1-43.

Authorship details
Rudman, W.B., 1998 (April 13) Thorunna montrouzieri Rudman, 1995. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

Thorunna montrouzieri found sthrn Queensland

October 26, 2009
From: Gary Cobb

Concerning message #131:

Hi Bill and everyone!
After a dive at Flinders Reef north of Moreton Island we discovered that we had a little gem! Thorunna montrouzieri where we had thought was T. daniellae.
After reading your Fact Sheet I thought I should let you know that this area is revealing many Opisthobranchs thought only to be far north of us.

Locality: Flinders Reef, Moreton Island, Depth 15 m, Queensland, Australia, Pacific Ocean, 06 October 2009, Subtidal. Length: Length 10 mm. Photographer: Gary Cobb and David Mullins.


Cobb, G.C., 2009 (Oct 26) Thorunna montrouzieri found sthrn Queensland. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Gary,

Thanks for this nice little addition to our knowledge

Best wishes,
Bill Rudman

Rudman, W.B., 2009 (Oct 26). Comment on Thorunna montrouzieri found sthrn Queensland by Gary Cobb. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thorunna(?) species from Okinawa

April 13, 1998
From: Robert F. Bolland

Dear Bill:

The sea slug forum is a terrific idea and I'm very impressed with everything I've seen at the site.

Here is one of two .jpg files of separate Thorunna(?) species from here on Okinawa. I'm afraid that both of the photos are of very poor quality, but thought there might be enough here for at least a tentative identification(?).

Thorunna species #1 (TL: 11mm) was collected on 17 May, 1991 from Horseshoe Cliffs, Okinawa. The animal was found at 43m on a vertical rock wall covered with numerous corals, sponges, bryozoans, etc. Couldn't ascertain for sure what it was feeding upon. This is the only one I've seen here.

Robert F. Bolland

Robert F. Bolland, 1998 (Apr 13) Thorunna(?) species from Okinawa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Looks very like Thorunna montrouzieri which is only known from specimens which I saw in northern New Caledonia in 1993. If your animal is indeed this species its quite an extension to its known distribution. There is also a photo in our photo gallery ....Bill Rudman.

Rudman, W.B., 1998 (Apr 13). Comment on Thorunna(?) species from Okinawa by Robert F. Bolland. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from