(Marcus & Marcus, 1967)
Caribbean [Florida, Bahamas, Cuba]
Upper: Southern Bahamas, August 2002. Photo: Paul Young.
Lower: Orange Cay, Bahamas. at 60 feet, May 11, 2003. Photo: Larry Townsend
Unfortunately the original description is based on 2 preserved animals from Florida. The one colour photo shows a fairly dark blue animal and a red mantle border. Another photo (Humann, 1992) also shows a dark blue animal but the border appears to be multicoloured - red on the outside then yellow orange, and white on the inside. The upper animal illustrated here appears to be a pale version of that. Marcus & Marcus place the species in the genus Chromodoris but the shape of the radular teeth, the narrow ribbon, the shape of the jaw plates, and the position of the mantle glands suggest this is most probably a species of Hypselodoris, although Ortea et al (1996) suggest it should be placed in Risbecia. I only know of these three previous records of the species.
• Humann, P. (1992) Reef Creature Identification - Florida, Caribbean, Bahamas.
• Marcus, Er. & Marcus, Ev. (1967) American opisthobranch mollusks. Part 1, Tropical American opisthobranchs. Studies Tropical Oceanography, Miami, 6(1-2): 1-137. (Figs 1-150, Pl.1, figs 1-9)
• Ortea, J., Valdes, A. & Garcia-Gomez, J.C. (1996) Review of the atlantic species of the Family Chromodorididae (Mollusca: Nudibranchia) of the blue chromatic group. Avicennia (Suppl. 1): 1-160.
Rudman, W.B., 2003 (May 28) Hypselodoris nyalya (Marcus & Marcus, 1967). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/hypsnyal
Hypselodoris nyalya from Kay Largo, Florida
From: Paul Osmond, August 10, 2007
From: Bill Gomez, June 19, 2006
Hypselodoris nyalya feeding
From: Marina Poddubetskaia, March 8, 2004
Hypselodoris nyalya from Florida
From: Linda Ianniello, November 18, 2003
Hypselodoris nyalya from Bimini, The Bahamas
From: Paul Osmond, June 7, 2003
Hypselodoris nyalya from the Bahamas
From: Larry Townsend, May 29, 2003
Nudibranch from Southern Bahamas
From: Paul Young , September 10, 2002