Issid planthoppers from Bach Ma and Phong Dien in Central Vietnam. I. Tribe Parahiraciini (Hemiptera: Fulgoromorpha: Issidae)

Eight species of Issidae (Hemiptera: Fulgoromorpha) belonging to the tribe Parahiraciini, were collected in recent years in Bach Ma National Park and Phong Dien District in Thừa Thiên-Huế Province in Central Vietnam. A new genus Cyclopissus gen. nov. is erected to accommodate a new species Cyclopissus corticalis gen. et sp. nov. from Bach Ma National Park. Three new species of the genus Flavina Stål, 1861 are described: F. bachmana sp. nov. from Bach Ma National Park and Da Krong Nature Reserve (Quang Tri Province), and F. lami sp. nov. and F. quangi sp. nov. from Bach Ma. Two new species of the genus Pseudochoutagus Che, Zhang & Wang, 2011 are described: Ps. lindae sp. nov. from Bach Ma and Ps. trungi sp. nov. from Phong Dien. One new species of the genus Pusulissus Bourgoin & Wang, 2020, Pu. bachmaensis sp. nov., is described from Bach Ma. Gelastyrella litaoensis Yang, 1994 is recorded from Quang Tri and Thừa Thiên- Huế provinces in Central Vietnam and from Thanh Hoa and Ninh Binh provinces in North Vietnam, for the first time. These eight species represent the first records of the family Issidae for Thừa Thiên-Huế Province and hence, the Vietnamese fauna now counts 58 species in 13 genera. An identification key to the Vietnamese genera of Parahiraciini is given.