Chromodoris? sp. 1.

Suborder: DORIDINA
Family: Chromodorididae


Palau and Guam. (see Clay Carlson's message below).


Clay Carlson


Chromodoris decora

Authorship details
Rudman, W.B., 1998 (September 4) Chromodoris? sp. 1. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

More on Chromodoris sp. 1

August 29, 1999
From: Scott Johnson

Regarding the message and photo of the Guam and Palau Chromodoris sp. 1 from Clay Carlson: I can't help with an id, but I have what appears to be the same species here in the Marshall Islands. I've seen a dozen or more specimens at Kwajalein and Enewetak, usually under rocks or in small caves at depths of 5-20 meters. Its surface texture made me think initially that it might be a Dendrodorid, but it has a typical Chromodoris radula and reproductive system. There's some color variation; I'd have to do some more scanning, but I can send more pictures if anyone's interested.


Johnson, S., 1999 (Aug 29) More on Chromodoris sp. 1. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Scott,
I'm interested in seeing some more variation, if you have the time.
Best wishes,
Bill Rudman.

Chromodoris from Guam

September 4, 1998
From: Clay Carlson

Bill, Do you have any ideas on the attached scan? We picked up the animal in Palau some 20 years ago and just recently found it in Guam. The scan is of a 13mm specimen, On this the marginal color band is a golden brown. The more recent animals from Guam had a more orangish marginal band as well as a hint of purple on the rhinophore lamella and on the oral tentacles. The submarginal purple/reddish spots carried through the mantle to appear as red spots on the underside. Chromodoris lata?

Thanks for any help or suggestions you can offer.


Clay Carlson
Ph: 671 828-8082/3434
Merizo, Guam P.O. Box 8019
Fax: 671 828-0827
N Merizo, GU 96916

Carlson, C. & Hoff, P.J., 1998 (Sep 4) Chromodoris from Guam. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Your animal certainly looks like a chromodorid. My suggestion would be a colour form or a close relative of Chromodoris decora. It is one of the few species with such a transparent edge to the mantle. If the Y-shaped mark on the back was extended to cover the whole of the back it would be very similar to your species. Just a guess. I don't think we will ever know what Risbec's Chromodoris lata is but my understanding of his description is of an opaque white mantle with a thin red border. Any one else with ideas? .. Bill Rudman.

Rudman, W.B., 1998 (Sep 4). Comment on Chromodoris from Guam by Clay Carlson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from