March 15, 2000
From: Yasuhiro Shirai
I attached 2 image file in this mail.
These images are same individual. This animal's body is white. And this animal has pink gills and rhinophores.
Is this animal Noumea simplex?
Could you please identify it for me?
Location: Shima Pref. Mie, Japan (Kii Peninsula, east coast)
Water temperature: 15C
Crawling on seaweed.
firstname.lastname@example.orgShirai, Y., 2000 (Mar 15) Noumea from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2063
Your animal does look a bit like the white colour form of Noumea simplex but in that species the reddish-orange pigment on the gills and rhinophores is only at the tips.
Your species is quite like Noumea hongkongiensis Rudman, 1990 but the colour of the gills and rhinophores seem to be slightly different. I don't know if the difference is real or caused by different types of photographic film.
At the moment I think perhaps it is best to call it Noumea cf. hongkongiensis. Best wishes,