February 26, 2000
From: Yasuhiro Shirai
Thanks for your help. I have sometimes found this opisthobranch at Shima Prefecture, Mie, Japan. I think that it is Siphopteron sp. but I don't know this animal's real name. I searched in some books, but without success. Could you please identify it for me?
Location: Shima Pref. Mie, Japan (Kii Peninsula, east coast)
Water temperature: 14C
Date Jan. 2000-Feb.2000
Crawling on rock or crawling on seaweed.
firstname.lastname@example.orgShirai, Y., 2000 (Feb 26) Siphopteron fuscum from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1968
This is an interesting find. I think it is an animal described by Baba & Tokioka in 1965 as Gastropteron fuscum. I don't know of any record of it being found since then.
In Terry Gosliner's revision of the family (1989) he placed it in the genus Siphopteron. It is certainly a spectacular looking, and easily recognised, species.