1 Key Laboratory for Biodiversity and Ecological Engineering of Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, 100875, China. asterzhang@bnu.edu.cn.
2 Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong, 637002, China.
3 IUCN-CI Biodiversity Assessment Unit, Global Species Program, NW, 20009, Washington DC, USA.