Gastropteron viride
Tokioka & Baba , 1964
Order: CEPHALASPIDEA
Superfamily: PHILINOIDEA
Family: Gastropteridae
DISTRIBUTION
Japan
PHOTO
UPPER: Ose-zaki, Izu peninsula, Japan, 5 June 2001, Depth: 26m, Length: approx 8mm. Photo: Haruo Kinoshita.
LOWER: Painting of holotype by Mr S. Kato. Tokioka & Baba, 1964 (Pl.10, fig. 8).
Described from a single preserved animal collected in Sagami Bay in 1956. [3.5mm long preserved]. The colour description was based on the colour painting copied alongside. The present photo differs only in the intensity of the green colour on the parapodia. In the photo of the living animal it seems that there is a well developed siphonal crest which is more typical of the genus Siphopteron than Gastropteron. Also the reduced number of outer radular teeth, as described by Tokioka & Baba, also indicate that this species may in fact belong in the genus Siphopteron.
References:
• Gosliner, T.M. (1989) Revision of the Gastropteridae (Opisthobranchia: Cephalaspidea) with descriptions of a new genus and six new species. The Veliger, 32(4): 333-381.
• Tokioka, T. & Baba, K (1964) Four new species and a new genus of the family Gastropteridae from Japan (Gastropoda : Opisthobranchia). Publications of the Seto Marine Biological Laboratory, 12(3): 201-229, Text-figs 1-15, Pls 10-13.
Rudman, W.B., 2002 (January 23) Gastropteron viride Tokioka & Baba , 1964 . [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/gastviri
Related messages
Re: Gastropteron viride from Izu Peninsula, Japan
January 25, 2002
From: Haruo Kinoshita
Thank you for your reply. I have heard as private message that this species have been found at same place before and appeared in diver's magazine as an unknown Gastropteron. So there is a possibility of finding again at there. I am looking forward to refinding it and I would like to report the detail here in the Forum. I have read Tokioka and Baba's article, this species was named as 'Midori-umikotyo' in Japanese by them.
Regards,
Haruo Kinoshita
kinoh@vesta.ocn.ne.jp
Kinoshita, H., 2002 (Jan 25) Re: Gastropteron viride from Izu Peninsula, Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6090Dear Haruo,
I look forward to some more finds
Best wishes,
Bill Rudman
Gastropteron viride from Izu Peninsula, Japan
January 24, 2002
From: Haruo Kinoshita
The attached pictures were found and taken at Ose-zaki of the west of Izu Peninsula, Japan. I think this is one of Gastropteridae and rare color pattern. Please help me for identification. I have been calling it 'Hinomaru-umikocho' in Japanese.
Date : 5-Jun-2001
Location : Ose-zaki,Izu peninsula, Japan
Depth : 26m
Length : approx 8mm
Photo : Haruo Kinoshita
Upper picture was taken as I found it.
Lower picture looks like it is flying as background is out of focus. But actually is not.
Regards,
Haruo Kinoshita
kinoh@vesta.ocn.ne.jp
Kinoshita, H., 2002 (Jan 24) Gastropteron viride from Izu Peninsula, Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6061 Dear Haruo,
It is only 3 weeks into 2002 and we have already got quite a few exciting new finds sent to the Forum. I have not seen a photo of your animal before but I am sure it is Gastropteron viride which was described from a single animal from Sagami Bay. If you look at the Fact Sheet I have included a copy of the original painitng of this species. I think the green colour in the painting is probably the artist's way of showing the greenish tinge we can see in your photos.
It is a very interesting find,
Best wishes,
Bill Rudman
