Dayhiracia gen. nov., a new planthopper genus of the tribe Parahiraciini from Thailand (Hemiptera: Fulgoromorpha: Issidae)

A new genus of Issidae (Hemiptera: Fulgoromorpha) belonging to the tribe Parahiraciini Cheng &; Yang, 1991, Dayhiracia gen. nov., is erected to accommodate a new species Dayhiracia circularis gen. et sp. nov. from Nakhon Si Thamarat Province in Thailand. Illustrations of habitus and terminalia of the new species are given as well as a distribution map and a photograph of a live specimen. The Thai fauna of the family Issidae now counts ten species in five genera.