Additions to Japanagallia ishihara (Hemiptera, Cicadellidae, Megophthalminae) from Guizhou, and Yunnan provinces, and Guangxi autonomous region, Southwest China.

The (nine) valid species of Japanagallia Ishihara, 1955 from Guizhou, and Yunnan Provinces, and Guangxi Autonomous Region of Southwest China are reviewed and four new species J. gracilenta sp. nov., J. neohamata sp. nov., J. trifurcata sp. nov. and J. viraktamathi sp. nov. are described and illustrated. These species can be distinguished by unique features of the aedeagus. J. hamata Zhang & Li, 1999 is redescribed and illustrated based on the holotype and material from Guizhou Province and Guangxi Autonomous Region. A checklist and a key for identification of species of the genus Japanagallia are provided along with a map showing the distribution of Japanagallia in Guizhou, and Yunnan Provinces, and Guangxi Autonomous Region.