Northeast China Mesozoic Diptera Horned Suborder Of Fossil Insects

Eastern Inner Mongolia and Western Liaoning are located in the Northeast part of China. This area is one of the most typical in the world,with well-developed continental Mesozoic sediments,yielding abundant fossils.Most motable fossils from this area are from the terrestrial Jurassic,especially in Jiulongshan Formation of Middle Jurassic and Yixian Formation of Late Jurassic,where abundant insect fossils have been discovered,providing important evident for the study of the origin and early evolution of insects.The present paper is a taxonomic study of fossil Diptera from Northeast China.Firstly,the researching history on Diptera is provided.Secondly,the morphology and biology are reviewed. Then the origin,evolution and phylogenesis of Diptera are discussed.At last,a taxonomic work on Mesozoic Diptera is presented.Species of genera within Limoniidae,Eoptychopteridae,Protopleciidae reported.The genera and new species in this paper are listed as follows:Genera:Architipula Handlirsch,1906;Eoptychopterinae Kalugina,1985;Crenoptychoptera Kalugina,1985;Mesoplecia Rohdendorf,1938.New species:Architipula abnormis sp.nov.;Architipula conformis sp.nov.;Architipula venustus sp.nov.;Architipula decorus sp.nov.;Architipula exiguous sp.nov.;Architipula longiovalis sp.nov.;Architipula peuiliaris sp.nov.;Architipula tenuitibia sp.nov.; Eoptychopterina antica sp.nov.;Eoptychopterina adnexa sp.nov.;Eoptychopterina mediata sp. nov.;Eoptychopterina exquisite sp.nov.;Eoptychopterina elenae Ren,2002;Crenoptychoptera decorosa sp.nov.;Crenoptychoptera vulgaris sp.nov.;Crenoptychoptera vicina sp.nov.; Mesoplecia sinica Zhang,2007;Mesoplecia coadnata sp.nov.;Mesoplecia antiqua sp.nov.; Mesoplecia anfracta sp.nov.The important critical characteristics of the genera and species are described.The specimens were examined with LAICA MZ 12.5 dissecting microscope and illustrated with the aid of a drawing tube attached to microscope and the software of CorelDraw12.All the type specimens described here are deposited in the College of Life Sxience,Capital Normal University in Beijing,China.