1. Department of Biosciences and Biotechnology, Faculty of Agriculture, University of the Ryukyus , Nishihara , Okinawa , Japan ;
2. Department of Materials Chemistry, National Institute of Technology, Asahikawa College , Asahikawa , Hokkaido , Japan ;
3. The Hokkaido University Museum, Hokkaido University , Sapporo , Hokkaido , Japan ;
4. Coastal Branch of Natural History Museum and Institute , Katsuura , Chiba , Japan