 
 
				
				
				
					Thordisa villosa 
 (Alder & Hancock, 1864)
				
				
				
					
						Order: NUDIBRANCHIA
					
						Suborder: DORIDINA
					
						Family: Dorididae
					
				
DISTRIBUTION
Indo-West Pacific
PHOTO
Koumac, New Caledonia, 2m, October 1993, 70mm long alive. PHOTO: Bill Rudman.
The dorsum is translucent yellow with a characteristic pattern of dark brown patches around the mantle edge, while the underside is a bright orange yellow with small brown spots on the underside of the mantle and the sides of the foot. The dorsum is tuberculate and some of the larger tubercles have a long tapering fluid filled papillae.
Reference:
• Alder, J. & Hancock, A. (1864). Notice of a collection of nudibranchiate mollusca made in India by Walter Elliot Esq., with descriptions of several new genera and species. Transactions of the Zoological Society of London, 5: 113-147.
Rudman, W.B., 1999 (January 13) Thordisa villosa (Alder & Hancock, 1864). [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/thorvill
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