Pronemouridae fam. nov. (Insecta: Plecoptera), the stem group of nemouridae and notonemouridae,from the Middle Jurassic of Inner Mongolia,China |
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| Authors: | LIU YUSHUANG NINA D SINITSHENKOVA REN DONG SHIH CHUNGKUN |
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| Institution: | 1. Paleontological Institute, Shenyang Normal University, 253, North Huanghe Street, Shenyang 110034, China;2. e‐mail: lyshuang@126.com;3. College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District;4. Beijing 100037;5. China;6. corresponding author e‐mail: rendong@mail.cnu.edu.cn;7. Palaeontological Institute of the Russian Academy of Sciences, Profsoyuznaya 123, Moscow, Russia;8. e‐mail: nina_sin@mail.ru;9. College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District |
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| Abstract: | Abstract: A new family, Pronemouridae fam. nov., with a new genus, Pronemoura gen. nov., and five new species of fossil stoneflies are described from Daohugou village (Middle Jurassic), Inner Mongolia, China: P. shii sp. nov., P. angustithorax sp. nov., P. longialata sp. nov., P. minuta sp. nov. and P. peculiaris sp. nov. Wing venation of pronemourinids presents some or considerable variety in the fore and hind wings of the same or different individuals. Pronemourinidae, retaining plesiomorphic characters (short, multisegmented cerci and CuA with forks), should be treated as the stem group of Nemouridae and Notonemouridae. Based on fossil data, we propose a model in which the extant plecopterid distribution began in the Early Cretaceous. Nemouridae and Notonemouridae must have occurred in Asia and begun to migrate from here by at least the Early Cretaceous. |
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| Keywords: | Plecoptera Nemouriodae Pronemouridae Middle Jurassic Inner Mongolia China |
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