New Genus and Species of Fossil Dragonflies (Insecta: Odonata) from the Yixian Formation of Northeastern China  

作　　者：ZHANG Binglan REN Dong ZHOU Changqing PANG Hong 

机构地区：[1]State Key Laboratory of Biocontrol and Institute of Entomology, Sun Yat-Sen University, Guangzhou, Guangdong 510275 [2]College of Life Sciences, Capital Normal University, Beijing 100037

出　　处：《Acta Geologica Sinica(English Edition)》2006年第3期327-335,共9页地质学报（英文版）

基　　金：The research was supported by the National Natural Science Foundation of China （grants 30025006, 30370184, and 30430100）;State Key Laboratory of Biocontrol, Sun Yat-Sen University （2003-01）;Beijing Natural Science Foundation （5032003）;Scientific Research Key Program （KZ200410028013） ;RCQJ Project of the Beijing Municipal Commission of Education.

摘　　要：Two well-preserved fossil dragonflies from the Late Mesozoic Yixian Formation, Liaoning Province, China are described and assigned to a new genus, Sopholibellula gen. nov. in Araripelibellulidae Bechly, 1996, closely related to the type genus Araripelibellula. This new genus differs from AraripelibeUula in the following characters： origins of RP and MA distinctly separated at arculus in both pairs of wings; anal loop wider and shorter, with Y-shaped veins inside; MA and IR2 not zigzag; several small intercalary veins present in the postdiscoidal area of hindwing; cells smaller and much more dense, especially in the apex and hind margin; bigger in size. Structures, including head, abdomen and parts of legs, were first described in details of this family.Two well-preserved fossil dragonflies from the Late Mesozoic Yixian Formation, Liaoning Province, China are described and assigned to a new genus, Sopholibellula gen. nov. in Araripelibellulidae Bechly, 1996, closely related to the type genus Araripelibellula. This new genus differs from AraripelibeUula in the following characters： origins of RP and MA distinctly separated at arculus in both pairs of wings; anal loop wider and shorter, with Y-shaped veins inside; MA and IR2 not zigzag; several small intercalary veins present in the postdiscoidal area of hindwing; cells smaller and much more dense, especially in the apex and hind margin; bigger in size. Structures, including head, abdomen and parts of legs, were first described in details of this family.

关 键 词：ODONATA Anisoptera Araripelibellulidae new genus FOSSIL Late Jurassic Early Cretaceous China 

分 类 号：Q915.2[天文地球—古生物学与地层学]