The early evolutionary history of the Macrocerinae subfamily(Diptera:Keroplatidae)is poorly understood.However,new material from the Cretaceous,particularly in amber,provides a better understanding of this subject.We ...The early evolutionary history of the Macrocerinae subfamily(Diptera:Keroplatidae)is poorly understood.However,new material from the Cretaceous,particularly in amber,provides a better understanding of this subject.We reassign the oldest known species of Macrocerinae,Hegalari minor Blagoderov&Arillo,2002,from the amber of Álava(~105 Mya),to the genus Macrocera(M.minor comb.nov.).Furthermore,we reassess the systematic position of the problematic genus Burmacrocera Cockerell,1917 from Cenomanian Burmese amber(~99 Mya),providing evidence that it should be classified within this subfamily.Most significantly,we describe five new species from Burmese amber,including a new genus,Electrocera Pełczyńska&Soszyńska,gen.nov.,with two new species(E.prima Pełczyńska&Soszyńska,gen.et sp.nov.and E.payini Pełczyńska&Soszyńska,gen.et.sp.nov.)and three new Macrocera species(M.vonneguti Pełczyńska&Blagoderov,sp.nov.,M.sevciki Pełczyńska&Krzemiński,sp.nov.and M.pawli Pełczyńska,sp.nov.).展开更多
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...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.展开更多
基金funded by the National Science Center,Poland(grant no.2020/37/B/NZ8/03042)supported by funding from the French state via the Agence nationale de la Recherche under the Investissements d’avenir program(ANR-11-INBS-0004-RECOLNAT).
文摘The early evolutionary history of the Macrocerinae subfamily(Diptera:Keroplatidae)is poorly understood.However,new material from the Cretaceous,particularly in amber,provides a better understanding of this subject.We reassign the oldest known species of Macrocerinae,Hegalari minor Blagoderov&Arillo,2002,from the amber of Álava(~105 Mya),to the genus Macrocera(M.minor comb.nov.).Furthermore,we reassess the systematic position of the problematic genus Burmacrocera Cockerell,1917 from Cenomanian Burmese amber(~99 Mya),providing evidence that it should be classified within this subfamily.Most significantly,we describe five new species from Burmese amber,including a new genus,Electrocera Pełczyńska&Soszyńska,gen.nov.,with two new species(E.prima Pełczyńska&Soszyńska,gen.et sp.nov.and E.payini Pełczyńska&Soszyńska,gen.et.sp.nov.)and three new Macrocera species(M.vonneguti Pełczyńska&Blagoderov,sp.nov.,M.sevciki Pełczyńska&Krzemiński,sp.nov.and M.pawli Pełczyńska,sp.nov.).
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。
文摘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.
