Mesozoic The Kharg Ming Grasshopper Fossils (orthoptera: Hager Ming Grasshopper Branch)

Eastern Inner Mongolia is located in the Northeast part of China. This area is one of the most typical areas in the world, with well-developed continental Mesozoic sediments, yielding abundant fossils. Most notable fossils from this area are from the terrestrial Jurassic, especially in Jiulongshan Formation of Middle Jurassic, where abundant insect fossils have been discovered, providing important evidence for the study of the origin and early evolution of insects.The present paper is a taxonomic study of fossil Hagloids from Northeast China. First of all, the researching history on Hagloids and Orthoptera is provided. Secondly, the morphology and biology are reviewed. Then the origin, evolution and phylogenesis of Hagloids and Orthoptera are discussed. At last, a taxonomic work on Mesozoic Hagloids is presented.The genera and species in this paper are listed as follows:Genera: Flexaboilus Li & Ren. 2007, Angustaboilus Li & Ren. 2007, Novaboilus Li & Ren. 2007, Circulaboilus Li & Ren.2007, Furcaboilus Li & Ren. 2007, Declivaboilus gen. nov., Resupinaboilus gen. nov..Species: Sunoprophanlangopsis explanatus sp. nov., Protaboilus exiguus sp. nov., Protaboilus aciphyllus sp. nov., Flexaboilus retinervius Li & Ren. 2007, Flexaboilus densus sp. nov., Flexaboilus bellatulus sp. nov., Angustaboilus fangianus Li & Ren. 2007, Angustaboilus fimbriatulus sp. nov., Novaboilus multifurcatus Li & Ren. 2007, Circulaboilus aureus Li & Ren. 2007, Circulaboilus amoenus Li & Ren.2007, Furcaboilus excelsus Li & Ren. 2007, Resupinaboilus recurvatus sp. nov., Declivaboilus explanatus sp. nov., Declivaboilus pusillus sp. nov., Declivaboilus meniscus sp. nov., Aboilus oblongus sp. nov., Aboilus orientalus sp. nov..