Volvatella angeliniana
Ichikawa, 1993
Order: SACOGLOSSA
Superfamily: OXYNOOIDEA
Family: Volvatellidae
DISTRIBUTION
Known f rom Ryukyu Ids, Marianas Ids, and New Caledonia. probably widespread at least in western Pacific.
PHOTO
Pointe de Pandop, near Koumac, New Caledonia, 20°35'S, 164°15.5'E, Intertidal, hard substrate, algae, 24 October 1993, shell length 5mm, AM C200628. Photo: Bill Rudman
This species has recently been described from the Ryukyu Islands in southern Japan. The mantle is translucent white with many large white patches, and the head tentacles [rhinophores] are tipped with orange. There is an orange band around the posterior `spout', and there can be an orange band at the anterior end of the mantle. Specimens from New Caledonia are very similar in colour, but lack the anterior orange band. It is apparently a small species, largest animal with a 5 mm long shell.
-
Ichikawa, M. (1993) Saccoglossa (Opisthobranchia) from the Ryukyu Islands. Publications of the Seto Marine Biological Laboratory 36: 119-139.
Rudman, W.B., 2005 (September 20) Volvatella angeliniana Ichikawa, 1993. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/volvange
Related messages
Volvatella angeliniana from sthn Queensland
August 7, 2008
From: Gary Cobb
Concerning message #14813:
Hi Bill and everyone!
Here is a record of Volvatella angeliniana from the Sunshine Coast. It also gave off a milky substance when disturbed. This could be another record for Australia.
Locality: Old Woman Island, Mooloolaba, Sunshine Coast, 8 m, Queensland, Australia, Pacific Ocean, 23 December 2006, Subtidal. Length: 5 mm. Photographer: Gary Cobb.
Cheers
Gary Cobb
gary@nudibranch.com.au
Cobb, G.C., 2008 (Aug 7) Volvatella angeliniana from sthn Queensland. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21758
Dear Gary,
Julie Marshall and I have both found it at Heron Island [message #14816], but it's always good to get another record of this relatively unknown species
Best wishes,
Bill Rudman
Volvatella angeliniana from the Marshall Islands
September 22, 2005
From: Scott Johnson
Hi Bill,
Here is a pair of Volvatella angeliniana found at Enewetak Atoll, Marshall Islands. These were found under a rock on an intertidal reef at low tide. When disturbed, they secreted a milky substance.
Locality: Enewetak Island, Enewetak Atoll, Republic of the Marshall Islands.
Depth: 15 cm depth at low tide. Length: 7 x 2.5mm. 3 July 1981. Under rock on hard substrate. Photographer: Scott Johnson
Scott
uwkwaj@yahoo.com
Johnson, S., 2005 (Sep 22) Volvatella angeliniana from the Marshall Islands. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14813
Thanks Scott,
Nice to see specimens with the full colour pattern, as described in the original description .... and I must remember to use your photo when I prepare a page on gland secretions in the sacoglossans. Another point of interest is the shape of the shell in the animal in the right of your photo. It is much more inflated than the more slender shell of the other specimen, and the shell in Ichihawa's illustration and my animal from New Caledonia. I suspect the shell changes shape as the animal's grow, such as in Volvatella vigourouxi [see message #7456], which would make shell shape in this genus an even more impossible character.
Best wishes,
Bill Rudman
Re: Range extension for Volvatella angeliniana
September 22, 2005
From: Julie Marshall
Dear Bill,
Following your message #14805: We also found two specimens of Volvatella angeliniana at Heron Island in March, again on Caulerpa racemosa. The pictured animal was 8 mm in size (sorry not a good photo).
Locality: Heron Island, Great Barrier Reef, Queensland, Australia. Intertidal.
Length: 8 mm. 19 March 2005. Photographer: Julie Marshall
Best wishes,
Julie Marshall
juliemarshall@netspace.net.au
Marshall, J.G., 2005 (Sep 22) Re: Range extension for Volvatella angeliniana. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14816Dear Julie,
Thanks for the record. I think I found this species at Heron Island in the 1970s but considered it too small to photograph at that stage. I have been meaning to look through my field notes for a drawing but haven't had time ....
Best wishes,
Bill Rudman
Volvatella angeliniana from New Caledonia
September 21, 2005
From: Bill Rudman
Volvatella angeliniana was described from the Ryukyu Islands in southern Japan. The mantle is translucent white with many large white patches, and the head tentacles [rhinophores] are tipped with orange. There is an orange band around the posterior `spout', and there can be an orange band at the anterior end of the mantle.
Here is a record of a specimen from New Caledonia which lacks the anterior orange band. These are the only 2 records I know of this species.
Locality: Pointe de Pandop, near Koumac, New Caledonia, 20°35'S, 164°15.5'E, Intertidal, hard substrate, algae, 24 October 1993, shell length 5 mm, AM C200628. Photo: Bill Rudman
-
Ichikawa, M. (1993) Saccoglossa (Opisthobranchia) from the Ryukyu Islands. Publications of the Seto Marine Biological Laboratory, 36: 119-139.
Best wishes
Bill Rudman
Range extension for Volvatella angeliniana
September 21, 2005
From: Bill Rudman
In my message about Volvatella angeliniana [#14805 ] I should have mentioned Carlson & Hoff's (2003) from Guam.
-
Carlson, C. & Hoff, P.J. (2003). The opisthobranchia of the Marianas Islands. Micronesica, 35-36: 272-295.
Bill Rudman
Rudman, W.B., 2005 (Sep 21) Range extension for Volvatella angeliniana. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14811