VASSILIEVA, ANNA B., Department of Vertebrate Zoology, Biological Faculty, Lomonosov Moscow State University, Leninskie Gory, GSP–1, Moscow 119991, Russia A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, 33, Leninsky prospect, Moscow 117071, Russia Joint Russian-Vietnamese Tropical Research and Technological Centre, Nguyen Van Huyen, Nghia Do, Cau Giay, Hanoi, Vietnam