1. Laboratory of Wildlife Biology, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Japan
2. Laboratory of Wildlife Ecology, Department of Life Science, Tunghai University, Taichung 407, Taiwan, R.O.C.
3. Division of Zoology, Taiwan Endemic Species Research Institute, Chichi 552, Taiwan, R.O.C.
4. Institute of Ecology and Biological Resources, Vietnam Academy of Sciences and Technology, 18 Hoang Quoc Viet Str., Caugiay Distr., Hanoi, Vietnam
5. Graduate University of Sciences and Technology, 18 Hoang Quoc Viet Str., Caugiay Distr., Hanoi, Vietnam
6. The University Museum, The University of Tokyo, Tokyo 113-0033, Japan
7. College of Veterinary Medicine, Seoul National University, Seoul 151-742, Korea
8. Laboratory of Veterinary Anatomy, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Japan