Gastropteron sp. 3

Order: CEPHALASPIDEA
Superfamily: PHILINOIDEA
Family: Gastropteridae

PHOTO

Upper: Izu-Shirahama, Izu Peninsula, Japan
Depth: 50cm (Tide pool) Length: 5mm. 21-Mar-2000. Photo: Hisako Yamada
Lower: Hachijo Is., Japan. Photo: Shouichi Kato.

Authorship details
Rudman, W.B., 2002 (July 2) Gastropteron sp. 3 [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/gastsp3

Related messages


Siphopteron? from Hachijo Island Japan

July 5, 2002
From: Shouichi Kato


Dear Bill,
I would like to send you two pictures of Siphopteron. This May, we could see many variations of this species on the inner reef shallower than 10m in depth. Mainly around 10mm in size. Sometimes we can see them mating. Most of them look like the upper picture but the color variation seen in the lower picture was also seen last year. I think they are same species. Could you please tell us what you think.

Best regards,
S. Kato

regulus@edit.ne.jp

Kato, S., 2002 (Jul 5) Siphopteron? from Hachijo Island Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7094

Dear Shouichi,
I agree they are the same species, and I think they are the same as those in Haruo Kinoshita's earlier message. I suspect this is a species of Gastropteron as the siphon at the posterior tip of the head shield is less elaborate than in species of Siphopteron. I have looked through the literature but can't find a name for this species.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Jul 5). Comment on Siphopteron? from Hachijo Island Japan by Shouichi Kato. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/7094

Gastropteridae from Izu Peninsula, Japan.

February 17, 2002
From: Haruo Kinoshita


Dear Bill,
The attached pictures were found and taken by Hisako Yamada. This is certainly Gastropteridae, we think. But we can't determine further identification. Can you please help us?

Date: 21-Mar-2000
Location: Izu-Shirahama, Izu Peninsula, Japan
Depth: 50cm (Tide pool)
Length: 5mm
Watertemperature: 14c
Photo: Hisako Yamada

Regards,
Haruo Kinoshita

kinoh@vesta.ocn.ne.jp

Kinoshita, H., 2002 (Feb 17) Gastropteridae from Izu Peninsula, Japan.. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6246

Dear Haruo,
Yes this is a species of the Gastropteridae and I think it is probably a species of Gastropteron. However I don't recognise it and think it may be an unnamed species. Perhaps someone will recognise it.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Feb 17). Comment on Gastropteridae from Izu Peninsula, Japan. by Haruo Kinoshita. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6246