Discovery of a Flatidae planthopper (Hemiptera: Fulgoromorpha) in the Paleocene of Northern Tibet and its taxonomic and biogeographic significance

A new genus and species of Flatidae planthoppers, Priscoflata subvexa n. gen., n. sp., is described here on the basis of tegmen from the Paleocene of Northern Tibet. The tegminal features of this fossil and its importance for classification and phylogenetic studies within Flatidae are given. The comparison of this fossil and other extant and extinct flatids, its systematic position, its biogeographic and evolutionary significance are discussed. “Ormenis” devincta Cockerell, 1926 from the Eocene of Argentina is placed in Fulgoroidea incertae sedis.