Abstract
A dentary fragment of a great evening bat Ia io Thomas, 1902 found in 2020 in the Pleistocene deposits of the Lang Trang karstic cave in northern Vietnam is described. This rare species of large tropical bats now inhabits Nepal, eastern India, southern China, Thailand, Laos, and Vietnam and as a fossil is known from the Pleistocene of China. In Vietnam the fossil remains of this species have been discovered for the first time. By the total size and lower molar structure, the specimen from the Lang Trang cave is most similar to the subspecies Ia io peninsulata Soisook et al., 2017 that now occurs in southern Thailand.
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ACKNOWLEDGMENTS
The author thanks E.N. Maschenko, N.V. Serdyuk, A.A. Lozovsky (PIN), and Le Xuan Dac (Institute of Tropical Ecology of the Joint Russian–Vietnamese Tropical Scientific and Technological Center, Hanoi, Vietnam) for participation in collecting of materials in the Lang Trang cave in March 2020, A.N. Kuznetsov and S.P. Kuznetsova (Tropical Center) for their assistance in organizing the expedition, I.V. Fadeev (GDM) for providing modern specimens of Ia io, and P.Yu. Parkhaev and R.A. Rakitov (PIN) for their help in preparing SEM photographs.
Funding
The study was carried out as part of the work of the Joint Russian–Vietnamese Tropical Scientific and Technological Center for 2020–2022 (project “The Composition of the Fauna of Primates (Cercopithecidae, Pongidae) and Rodents (Rodentia) of the Pleistocene and Holocene of Vietnam as an Indicator of Environmental Change”).
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Translated by D. Ponomarenko
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Lopatin, A.V. Great Evening Bat Ia io (Vespertilionidae, Chiroptera) from the Pleistocene of Vietnam (Lang Trang Cave). Dokl Biol Sci 495, 276–279 (2020). https://doi.org/10.1134/S0012496620060046
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DOI: https://doi.org/10.1134/S0012496620060046