Chromodoris rubrocornuta
Rudman, 1985

Suborder: DORIDINA
Family: Chromodorididae


Known at present only from the western Pacific from north Queensland, Australia, Marshall Islands, Hong Kong and Japan.


Hoi Ha, Flynn Point, 3m, Hong Kong, 18 April 1982, AM C138518. Holotype. PHOTOS: Brian Darvell.

This is one of the many species of chromodorids which are white with either red, yellow or orange mantle borders, or a combination of two or three bands. C. rubrocornuta is one of a group of species, which I have called the Chromodoris fidelis colour group, which have an orange outer band at the mantle edge and an inner, often broken band of pink, red or purple. Its name is derived from its red rhinophores. Largest known specimen 13 mm long preserved.

If the animals in Scott Johnson's messages below, showing variation in the background colour of the mantle from white to yellow, are in fact this species then it seems the edge of the rhinophore lamellae can be white. In the photographs available to me from Hong Kong, the rhinophore club appeared a translucent red.

•Rudman, W.B. (1985) The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: Chromodoris aureomarginata, C. verrieri and C. fidelis colour groups. Zoological Journal fo the Linnean Society, 83: 241-299.
•Rudman, W.B. & Darvell, B.W. (1990) Opisthobranch molluscs of Hong Kong. Part 1. Goniodorididae, Onchidorididae, Triophidae, Gymnodorididae, Chromodorididae, (Nudibranchia). Asian Marine Biology, 7: 31-79

Authorship details
Rudman, W.B., 2000 (December 30) Chromodoris rubrocornuta Rudman, 1985. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

  1. Chromodoris rubrocornuta from American Samoa
    From: Emmanuel Tardy, May 16, 2005
  2. Chromodoris rubrocornuta from the Philippines
    From: Erwin Koehler, November 28, 2003
  3. Hong Kong Chromodoris rubrocornuta
    From: W.B. Rudman & B.W. Darvell, January 29, 2002
  4. Chromodoris rubrocornuta from the Philippines
    From: Jeff Rosenfeld, May 24, 2001
  5. Colour variation in Chromodoris rubrocornuta
    From: Scott Johnson, January 1, 2001
  6. Chromodoris rubrocornuta from Kwajalein?
    From: Scott Johnson, January 1, 2001

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