Flat-footed Females and Missing Males:A New Genus and Species of Pleciofungivoridae(Diptera:Bibionomorpha)Represents the First Record of the Family from Mid-Cretaceous Kachin Amber  

作　　者：ZHANG Qingqing Wiesław KRZEMINSKI Jan SEVCIK Vladimir BLAGODEROV Agnieszka SOSZYNSKA Kornelia SKIBINSKA 

机构地区：[1]Yunnan Key Laboratory for Palaeobiology,Institute of Palaeontology,Yunnan University,Kunming 650500,China [2]MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment,Yunnan University,Kunming 650500,China [3]State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment,Chinese Academy of Sciences,Nanjing 210008,China [4]Institute of Systematics and Evolution of Animals,Polish Academy of Sciences,52551 Kraków,Poland [5]University of Ostrava,Faculty of Science,Department of Biology and Ecology,Chittussiho 10,CZ-71000 Ostrava,Czech Republic [6]National Museums Scotland,Edinburgh,UK [7]Natural History Museum,London,UK [8]University of Lodz,Faculty of Biology and Environmental Protection,Department of Invertebrate Zoology and Hydrobiology,Banacha 12/16,90-237Łódź,Poland

出　　处：《Acta Geologica Sinica(English Edition)》2024年第3期541-547,共7页地质学报（英文版）

基　　金：funded by the Science Foundation of Yunnan Province(Grant Nos.2015HA021 and 202401CF070913);the National Science Centre of Poland(Grant No.UMO-2016/23/B/NZ8/00936);supported by the Alexander von Humboldt Foundation。

摘　　要：A new genus and species,Cretopleciofungivora simpsoni gen.et sp.nov.,from the extinct family Pleciofungivoridae(Diptera:Bibionomorpha),is discovered in mid-Cretaceous Kachin amber.Previously,this family was known only from imprints in sedimentary rocks of the Jurassic and the Lower Cretaceous.Discovery of a representative of Pleciofungivoridae in Kachin amber confirms the presence of the family in the Upper Cretaceous.The new species has a unique structure of fore tarsus,with lobed and extended tarsal segments Ⅱ to Ⅳ,a feature hitherto known only in a few species of extant Sciaroidea.Although not particularly rare,the new species is currently known only from female specimens.Possible reasons for this phenomenon,very unusual in Sciaroidea,are briefly discussed,including parthenogenesis as a potentially plausible hypothesis.

关 键 词：fungus gnats Sciaroidea Upper Cretaceous Burmese amber swollen tarsomeres 

分 类 号：Q915.8[天文地球—古生物学与地层学]