Classification Study On The Tribe Drabescini From China

The leafhopper tribe Drabescini belongs to the subfamily Deltocephalinae(Hemiptera:Auchenorrhyncha: Cicadellidae).Until now,Drabescini has been reported by 210 species in 43 genera of 2 subtribe in the world,including 81 species in 16 genera of 2 subtribe from China.In this study,we have made a comprehensive study on systematically taxonomic by review the previous research,morphological characteristics,attaching with external genital figurs of some male and female species and geographical distribution.The main results are as follow:1.TaxonomyIn this study,85 species of 16 genera of 2 subtribe are recorded,including 7 new species(3new species has been published).Meanwhile,generic characteristics and key to each genera and species are also provided,all the specimen are attached with external genital figures and colour plates.New taxa studied here are as follow:7 New speciesDrabescus bilaminatus Yu,Webb,Dai & Yang,2019Drabescus multipunctatus Yu,Webb,Dai & Yang,2019Drabescus rameus sp.nov.Bhatia circinata sp.nov.Bhatia holodonta sp.nov.Bhatia longiradiata sp.nov.Parabolopona robustipenis Yu,Webb,Dai & Yang,20192.Faunal analysis2.1.The type,proportion and characteristics of the genus of the Chinese Drabescini under world and China's zoogeographic regionsIn this study,we analyzed the Chinese 16 genera have 5 distribution types.Totally 11 genera only distribution in Oriental realm,reaching 68.7%.The Oriental-Palearctic realms are the dominate realms with 2 genera reaching 12.4% of all across realm types of Chinese genera.InChina's zoogeographic regions,Distribution 6 types.The unitary region types just 2,3 genera distribute in Central China region,reaching 18.7% of the total number.Central China regionSouth China region in the dominate with 9 genera reaching 56.1%.From the both zoogeographic regions,it shows that the distribution pattern of the Oriental realm including the southwestern China region,Central China region and South China region is dominated.Meanwhile the Oriental-Palearctic realms is the main body of the across realm types,with the closest connection and weaker links with other realms.2.2.The type,proportion and characteristics of the species of the Chinese Drabescini under world and China's zoogeographic regions.There are 6 distribution types of Chinese 84 species in the geographical division of the world's terrestrial animals.The unitary region types just 2,Oriental realm is dominate with 67 species reaching 79.7% of Chinese species.In across region types,Oriental-Palearctic realms is dominate with 10 species with 11.9% in the whole species.In China's zoogeographic regions,Distribution 8 types.The 3 species are unitary region types.Central China region is dominate with26 species reaching 30.9% of Chinese species,South China region is a little less with 24 species reaching 28.5%.Central China region-South China region in the dominate with 21 species reaching 25.0% in all across region types.In both zoogeographic regions,The distribution pattern of Chinese Drabescini species is mainly dominated by across realm types,of which Oriental realm including Southwest China region,Central China region and South China region is primary,Palearctic realm is second.In China's zoogeographic regions,Central China region and South China region are similarly distributed and have absolute advantages.