New taxa of Vizcayinae (Hemiptera: Auchenorrhyncha: Delphacidae), including a remarkable new genus from China

Neovizcaya sinica gen., sp. nov., the second genus of the delphacid subfamily Vizcayinae, is described and illustrated from Yunnan, south-west China. A key to the nine species of Vizcaya (the other genus of the subfamily) is provided, including the following four new species, which are described and illustrated: V. aschei sp. nov. (south India), V. latifrons sp. nov. (Taiwan), V. longispinosa sp. nov. (south-west China: south Yunnan) and V. lombokensis sp. nov. (Indonesia: Lombok). The new genus Neovizcaya is of special taxonomic and phylogenetic interest as it differs from Vizcaya in many characters. Based on these differences and from studies of the antennal sensilla, a revised definition of the subfamily is given. Micrographs of the antennae, egg, rostral apex and pretarsus of the subfamily are provided for the first time.