Costasiella sp. 3 from Bali
August 16, 2009
From: Douglas Hansen
Concerning message #21196:
Bill,
Attached are some photos of a sea slug we found in Puri Jati, Bali. My best guess is that they are a species of Stiliger, but I am not sure. They were quite common on the algae in that bay. They were quite small (4-8 mm), and I apologize for the poor quality of the photos. Even with a 50 mm macro lens they were difficult to photograph.
Locality: Puri Jati, 7 meters, Bali, Indonesia, Pacific Ocean, May 20, 2009, on algae in black sand bay. Length: 4-8 mm. Photographer: Douglas Hansen.
Thank you.
Doug Hansen.
mhel0323@sbcglobal.net
Hansen, D.S., 2009 (Aug 16) Costasiella sp. 3 from Bali. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22533
Dear Doug,
This does look quite like Stiliger or one of the other sacoglossans which look like aeolids. It belongs to an interesting genus of sacoglossans which are most easily identified by having their eyes very close together in the middle of the head. I have included two close-ups from your photos which show this. The genus is Costasiella, and this species is what I am calling Costasiella sp. 3.
One other characteristic is that species of Costasiellaappear to specialise on living on, and eating the fan-shaped green alga Avrainvillea. It would be interesting to know if this is the type of algae your animals were found on
Best wishes,
Bill Rudman
Related messages
-
Re: Costasiella sp. from Ratnagiri, India
From: Vishal Bhave, May 19, 2009 -
Costasiella sp. from Ratnagiri, India
From: Vishal Bhave, May 18, 2009 -
Costasiella sp. 3 from Bali
From: Supapong Areeprasertkul, October 28, 2008 -
Costasiella sp. from Indonesia
From: Ann Clear, October 28, 2008 -
Costasiella sp. 3 from the Philippines
From: Jeffrey de Guzman, October 10, 2007 -
Costasiella sp. 3 from New Caledonia
From: Jean-François Hervé, September 21, 2007 -
Costasiella sp. 3? from Bali
From: Linda Ianniello, November 30, 2006 -
Costasiella sp. 3 from Bali
From: Ian Dunsmore, March 4, 2005 -
Costasiella sp 3 from Lizard Id, Queensland
From: Nils Anthes, January 9, 2004 -
More Costasiella cf. kuroshimae from Philippines
From: Erwin Koehler, April 2, 2003 -
Re: Costasiella from Indonesia
From: Erwin Koehler, March 27, 2003 -
Re: Costasiella from Indonesia
From: Kathe R. Jensen, March 17, 2003 -
Costasiella from Indonesia
From: Takako Uno, March 15, 2003 -
Costasiella from the Philippines
From: Erwin Koehler, May 15, 2002 -
Costasiella from the Philippines
From: Erwin Koehler, May 9, 2002