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

ZHANG Qingqing ¹Wies?aw KRZEMI?SKI ²Jan ?EV?íK ³Vladimir BLAGODEROV ⁴Agnieszka SOSZY?SKA ⁵Kornelia SKIBI?SKA²

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作者信息

1. Yunnan Key Laboratory for Palaeobiology,Institute of Palaeontology,Yunnan University,Kunming 650500,China;MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment,Yunnan University,Kunming 650500,China;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
2. Institute of Systematics and Evolution of Animals,Polish Academy of Sciences,52551 Kraków,Poland
3. University of Ostrava,Faculty of Science,Department of Biology and Ecology,Chittussiho 10,CZ-71000 Ostrava,Czech Republic
4. National Museums Scotland,Edinburgh,UK;Natural History Museum,London,UK
5. University of Lodz,Faculty of Biology and Environmental Protection,Department of Invertebrate Zoology and Hvdrobiology,Banacha 12/16,90-237 Łódź,Poland
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Abstract

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.

Key words

fungus gnats/Sciaroidea/Upper Cretaceous/Burmese amber/swollen tarsomeres

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基金项目

Science Foundation of Yunnan Province(2015HA021)

Science Foundation of Yunnan Province(202401CF070913)

National Science Centre of Poland(UMO-2016/23/B/NZ8/00936)

Alexander von Humboldt Foundation()

出版年

2024

地质学报(英文版)

中国地质学会

地质学报(英文版)

CSTPCD

影响因子：1.414

ISSN：1000-9515

参考文献量54

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