A New Mesopsychid (Mecoptera) from the Middle Jurassic of Northeastern China  

作　　者：SHIH ChungKun QIAO Xiao Conrad C.LABANDEIRA REN Dong 

机构地区：[1]College of Life Sciences, Capital Normal University [2]Department of Paleobiology, Smithsonian Institution, National Museum of Natural History [3]Department of Entomology, University of Maryland, College Park [4]Department of Geology, Rhodes University

出　　处：《Acta Geologica Sinica(English Edition)》2013年第5期1235-1241,共7页地质学报（英文版）

基　　金：supported by the National Basic Research Program of China (973 Program) (2012CB821906);National Natural Science Foundation of China (No. 31230065, 31272352, 41272006);Project of Great Wall Scholar and KEY project of Beijing Municipal Commission of Education (grants KZ201310028033);China Geological Survey (grant 1212011120115)

摘　　要：The family Mesopsychidae Tillyard, 1917 presently consists of ten described genera from the Early Permian to the Early Cretaceous of Australia, China, Kyrgyzstan, Russia, South Africa, Tajikistan, and Ukraine. Herein, a new genus and a new species of fossil mesopsyehid, Epicharmesopsyche pentavenulosa gen. et sp. nov., is described from the Middle Jurassic Jiulongshan Formation of Inner Mongolia, China, supplementing the family-level diversity. The well-preserved, new material reveals many characters, including antennae, wing venation, shape and genitalia that increase our morphological understanding of the family, although unfortunately the mouthparts and most of the legs are not preserved. Diagnosis of the Mesopsychidae is emended to include a four- or five-branched MP in both the fore- and hind wings. This is the first documentation of a wing coupling structure in the Mesopsychidae, consisting of three to four frenula bristles on the humeral lobe at the base of the costal margin of both hind wings. Asymmetrical shape and size of the left and right wings on a specimen of E. pentavenulosa gen. et sp. nov., seems to be a common condition for mesopsychid taxa from northeastern China.The family Mesopsychidae Tillyard, 1917 presently consists of ten described genera from the Early Permian to the Early Cretaceous of Australia, China, Kyrgyzstan, Russia, South Africa, Tajikistan, and Ukraine. Herein, a new genus and a new species of fossil mesopsyehid, Epicharmesopsyche pentavenulosa gen. et sp. nov., is described from the Middle Jurassic Jiulongshan Formation of Inner Mongolia, China, supplementing the family-level diversity. The well-preserved, new material reveals many characters, including antennae, wing venation, shape and genitalia that increase our morphological understanding of the family, although unfortunately the mouthparts and most of the legs are not preserved. Diagnosis of the Mesopsychidae is emended to include a four- or five-branched MP in both the fore- and hind wings. This is the first documentation of a wing coupling structure in the Mesopsychidae, consisting of three to four frenula bristles on the humeral lobe at the base of the costal margin of both hind wings. Asymmetrical shape and size of the left and right wings on a specimen of E. pentavenulosa gen. et sp. nov., seems to be a common condition for mesopsychid taxa from northeastern China.

关 键 词：new genus and species wing coupling asymmetric wings taxonomic diversity Inner Mongolia 

分 类 号：Q915[天文地球—古生物学与地层学]