1. Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay, Hanoi, Vietnam
2. The Kyoto University Museum, Kyoto University, Kyoto 606–8501, Japan
3. Department of Zoology, National Museum of Nature and Science, Tsukuba, Ibaraki 305–0005, Japan
4. Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, Saint Petersburg 199034, Russia
5. Department of Vertebrate Zoology, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Vietnam