To refer to this article use this url: http://www.zoologischemededelingen.nl/85/nr04/a15
Acknowledgements
The authors express their cordial thanks to Akihiro Kawakubo and Shiori Horinouchi of the Saikai National Park Kujukushima Aquarium for their help in video-recording and collecting the holotype specimen. Our cordial thanks are also due to Dr. Mark J. Grygier, Lake Biwa Museum, for improving the English.
Received: 13.vi.2011
Accepted: 12.ix.2011
Edited: L.P. van Ofwegen