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| 1 | Two New Fossil Sawflies(Hymenoptera,Xyelidae,Xyelinae) from the Middle Jurassic of China显示文摘Two new genera with two new species of sawflies,Cathayxyela extensa gen.et sp.nov.and Aequixyela immensa gen.et sp.nov.,from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia,China,are assigned to the subfamily Xyelinae(Hymenoptera,Xyelidae).Cathayxyela gen.nov.can be distinguished by the third antennal article longer than the head; mesoprescutum and mesoscutellum nearly equal in length; the forewing with Sc meeting C before the junction of 1-M and 1-Rs; a weak and narrow pterostigma; and 3-Cu at least 1.5 times longer than the 1m-cu.Aequixyela gen.nov.is characterized by the third antennal article nearly as long as the head; the forewing with Rs+M approximately equal to 2-Rs in length; 2m-cu inclined toward the wing base and nearly reaching the middle of cell 3rm; 1m-cu as long as the 2-Cu and 3-Cu; and the cell 2cua of regular hexagonal shape. | WANG Mei Alexandr P.RASNITSYN REN Dong | 2014 | Acta Geologica Sinica(English Edition)2014，88，4： | 5 |
| 2 | New Species of Cimbrophlebiidae(Insecta: Mecoptera) from the Middle Jurassic of Northeastern China显示文摘Four new species of three genera in the family Cimbrophlebiidae, Telobittacus decorus sp.nov., Bellicimbrophlebia heteroneura sp.nov., Cimbrophlebia amoena sp.nov., and Cimbrophlebia gracilenta sp.nov., are described and illustrated based on eleven well-preserved fossil specimens.These specimens were collected from the latest Middle Jurassic Jiulongshan Formation of Daohugou, Inner Mongolia, China.This is the first record of the genus Cimbrophlebia in the Jurassic extending its age from the Lower Cretaceous to the Middle Jurassic.Due to same venational characters, we propose that an undescribed fossil specimen of Cimbrophlebiidae from the Jurassic of Germany is attributed to C.gracilenta sp.nov.Our new findings demonstrate an evolutionary trend of venational change from 185 to 50 Ma that the level of the bifurcation of Rs is gradually moving toward the base of wing in reference to the bifurcation of M. | ZHANG Xiao SHIH Chungkun ZHAO Yunyun REN Dong | 2015 | Acta Geologica Sinica(English Edition)2015，89，5： | 3 |
| 3 | New Species of Cretolimonia and Mesotipula(Diptera:Limoniidae) from the Middle Jurassic of Northeastern China显示文摘Two new species, Cretolimonia excelsa sp. nov. and Mesotipula gloriosa sp. nov., in Limoniidae of Diptera are described and illustrated, based on three fossil specimens with bodies and complete wings. These specimens were collected from the latest Middle Jurassic Jiulongshan Formation at Daohugou, Inner Mongolia, China. These are the first fossil records of these two genera from China. | GAO Jiaqi SHIH Chungkun ZHAO Yunyun REN Dong | 2015 | Acta Geologica Sinica(English Edition)2015，89，6： | 0 |
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