A Taxonomic Revision Of Ditrigona And Pilot Molecular Phylogeny Of Drepanidae (Lepidoptera:Drepanoidea:Drepanidae)

Drepanidae belongs to Drepanoidea,Heteroneura,Lepidoptera.On hindwing,Sc+R1 is closed to or anastamosed with Rs outside discal cell.The genus Ditrigona belongs to Drepaninae,Drepanidae,mainly distributed in China,with 46 species recorded in total and 39 species(10 subspecies)distributed in China.The wings of Ditrigona are usually lustrous white or buff.Unlike most genera of Drepanidae,the forewing apex of Ditrigona is not falcate.In this study,a taxonomic revision of Ditrigona in China was conducted,including 42 species and 11 subspecies.A new species Ditrigona tenuiata Jiang & Han,2019 was established during the research.Two new records were found in China: Ditrigona diana and Ditrigona candida.Fifteen taxonomic discussions were provided for Ditrigona uniuncusa,Ditrigona lineata and other 13 species.The distribution data of 17 species were revised,such as D.derocina,D.sericea,D.regularis,D.chionea.Through DNA barcoding of 106 specimens and the construction of NJ tree,16 known species and 9 unidentified species were sorted effectively.A preliminary study of molecular phylogeny of Drepanidae confirmed the monophyly of Cyclidiinae,Thyatirinae,and most genera.The monophyly of Oretinae is not confirmed.The inner relationships of Thyatirinae and Drepaninae are discussed.