Hypselodoris festiva from Hong Kong

January 26, 2002
From: Bill Rudman & Brian Darvell

Here is some information and photos on Hypselodoris festiva from Brian Darvell's Hong Kong collections.

This second blue and yellow species of Hypselodoris is characterized by the uniform blue background colour, a median yellow line (usually unbroken), and a series of yellow spots or streaks forming a line down each side of the mantle behind the rhinophores. There is a thin irregular yellow border to the mantle and the rhinophore club and gills are edged in orange. It grows to 30 mm in length. Another species with the same species name, Mexichromis festiva (Angas, 1864) was reported earlier from Hong Kong (Orr 1981: 26 - as Chromodoris festiva).

PHOTO: Upper, Lower Right: Hong Kong, 1983 (no data). Lower Left: AM C138149, 13 March 1983, Site 4.46, Kong Chau (N), Mirs Bay, 9 m. Photos: Brian Darvell.

Hong Kong Collection Records:
AM C135249, 11 July 1982, Site 8.31, Kong Tau Pai (N of Wang Chau), 5 m. AM C138149, 13 March 1983, Site 4.46, Kong Chau (N), Mirs Bay, 9 m. AM C150259, 2 specimens, 12 April 1986, Site 1. 137, Wong Wan Chau (NW), Double Haven, 7 m. AM C150351, 5 specimens, 4-20 April 1986, Tolo Harbour/Mirs Bay. Depth range: 0-15 m.

Reference:
• 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

Best wishes,
Bill Rudman & Brian Darvell

Rudman, W.B. & Darvell, B.W., 2002 (Jan 26) Hypselodoris festiva from Hong Kong. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6067

Copyright © Australian Museum, 1998-2010