Costasiella from the Philippines
May 9, 2002
From: Erwin Koehler
Dear Bill,
Here are the next shots from the Philippines,
Negros Oriental Island, Lipayo, divesite
"Dauin".
Sizes: Upper: 4mm, Lower: 3mm
Depth: 7m
08.March 2002.
Erwin
Erwin@medslugs.de
Koehler, E., 2002 (May 9) Costasiella from the Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/6637Note: Moved to Costasiella sp. 3. See relevant message. - 2 April 2003
Dear Erwin,
I am pretty sure this is a species of Costasiella but I can't see the position of the eyes in your photos to be sure. If it is that genus there are a couple of species described from Japan which are quite close but not exactly the same.
• Costasiella paweli was described with black rhinophores, head and tail white, cerata green with white tips and spotted with black specks.
• C. kuroshimae has white rhinophores with white tips and the cerata are generally green with white tips.
Both species were described by Ichikawa (1993) from a few specimens. At present we do not know how variable in colour species of Costasiella but at present I can't really identify your animals with any named species.
• Ichikawa, M. (1993) Saccoglossa (Opisthobranchia) from the Ryukyu Islands. Publications of the Seto Marine Biological Laboratory, 36: 119-139.
Best wishes,
Bill Rudman
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