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The first fossil Megalopsidiinae (Coleoptera: Staphylinidae) from Upper Cretaceous Burmese amber and its potential for understanding basal relationships of rove beetles
Institution:1. Entomological Laboratory, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Hakozaki 6-10-1, Fukuoka 812-8581, Japan;2. Japan Society for the Promotion of Science Research Fellow (DC), Japan;3. Natural History Museum of Denmark, Biosystematics Section, Zoological Museum, Universitetsparken 15, DK-2100 Copenhagen, Denmark;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. Graduate School, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China;1. School of Life Science, Ningxia University, 539 West Helanshan Road, Xixia District, Yinchuan 750021, China;2. College of Biological Science and Engineering, Beifang University of Nationalities, 204 Wenchangbeijie, Xixia District, Yinchuan 750021, China;3. Ningxia Geological Museum, 301 East Street of People''s Square, Jinfeng District, Ningxia 750011, China;4. College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, China;1. Museum of Natural History, University of Wrocław, Sienkiewicza 21, 50-335, Wrocław, Poland;2. Departament d''Estratigrafia, Paleontologia i Geociències Marines, and Institut de Recerca de la Biodiversitat (IRBio), Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028, Barcelona, Spain;1. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China;2. Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China;3. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China;1. Departament d''Estratigrafia, Paleontologia i Geociències Marines, and Institut de Recerca de la Biodiversitat (IRBio), Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain;2. Department of Biological and Environmental Sciences, University of Tennessee at Chattanooga, 615 McCallie Ave. Dept. 2653, Chattanooga, TN 37403, USA
Abstract:The first definitive fossil of the peculiar monotypic rove beetle subfamily Megalopsidiinae is described as a new species Megalopinus extinctus sp. n. It represents a stem lineage valuable for the study of the early diversification of Staphylinidae, where sister group relationships of Megalopsidiinae currently remain a big controversy. This discovery corroborates the Mesozoic origin of this subfamily implied by its presumably basal phylogenetic position within Staphylinidae and hitherto available fossil record for the family. Well preserved peculiar mouthparts of M. extinctus specialized similarly with recent Megalopinus suggest the same mode of feeding in Megalopsidiinae for nearly a hundred million years.
Keywords:Burmite  Cenomanian  Myanmar  New species
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