First report of Cixiidae insect fossils from the Miocene of the northeastern Tibetan Plateau and their palaeoenvironmental implications

Li, Y., Liu, X., Ren, D., Li, X. & Yao, Y., June 2016. First report of Cixiidae insect fossils from the Miocene of the northeastern Tibetan Plateau and their palaeoenvironmental implications. Alcheringa 41, xxx–xxx. ISSN 0311-5518.

A new insect species, Cixius discretus (Hemiptera, Fulgoromorpha), from the Lower Miocene Garang Formation of Zeku County, Qinghai Province (northeastern Tibetan Plateau) is described. This species can be assigned to Cixiidae and represents the first fossil representative of this family from Qinghai Province. Based on the recent single-origin hypothesis and the distribution of tectonic plates in the Cretaceous, we consider that ancient Cixius had dispersed globally prior to the Cretaceous. Through analysis of the habitats of extant Cixius, the palaeoclimate and fossil flora of the Zeku area during the Miocene, we interpret the climate of Zeku in the early Miocene to have been warm-temperate and mildly arid. The new species constitutes evidence of wooded and shrubby habitats in Zeku during the Miocene.

Yi Li [liy0124@sina.com], XiaoHui Liu [liuxh8917@163.com], Dong Ren [rendong@mail.cnu.edu.cn] and YunZhi Yao [yunzhi@cnu.edu.cn], College of Life Sciences, Capital Normal University, Xisanhuanbeilu 105, Haidian District, Beijing 100048, PR China; XiangChuan Li [lzulixiangchuan@163.com], College of Earth Sciences and Resources & Key Laboratory of Western Mineral Resources and Geological Engineering of the Ministry of Education, Chang’an University, Xi’an 710054, PR China.     

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