The diagnostic characters of the Chinese planthopper genus Tetricodes Fennah, 1956 are redefined. Three new species of this genus, T. ansatus Chang & Chen, sp. n. (China: Guangxi), T. parvispinus Chang & Chen, sp. n. (China: Guizhou) and T. similis Chang & Chen, sp. n. (China: Guizhou) are described and illustrated. The female genitalia of the genus is described and illustrated for the first ti...

A comprehensive review of cytogenetic features is provided for the large hemipteran suborder Auchenorrhyncha, which currently contains approximately 42,000 valid species. This review is based on the analysis of 819 species, 483 genera, and 31 families representing all presently recognized Auchenorrhyncha superfamilies, e.i. Cicadoidea (cicadas), Cercopoidea (spittle bugs), Membracoidea (leafhop...

The new issid taxon, Folifemurum duplicatum gen. et sp. nov. from China is described and illustrated. This description includes external morphology of the adult, and structures of the male and female genitalia. The genus is placed in the tribe Parahiraciini. A diagnosis of Folifemurum gen.nov. is given and is compared to the related genus Neodurium Fennah. In addition, a key to all genera of th...

Eight new synonymies of taxa different rank and six combinations are proposed in members the family Issidae (Hemiptera: Auchenorrhyncha: Fulgoroidea) occurring China based on their original descriptions. New (senior first): Hemisphaeriini Melichar, 1906 = Superciliarinae Meng, Qin et Wang, 2020, syn. n.; Pusulissus Bourgoin 2020 Flatiforma Tetrichina Chang Chen, Lunatissus Microsarimodes 2019 E...

The genus Cleotyche in the monotypic Australian planthopper tribe Cleotychini (Fulgoroidea: Dictyopharidae) is reviewed. subgenus Griseotyche subgen. nov. described to accommodate one species blanda Emeljanov, 2011 while second species, C. mariae 1997, retained (Cleotyche) 1997. Three new of from Queensland, christinae sp. Cania Gorge National Park, francescoi Eurimbula Park and montana Blackdo...

A new genus of Delphacini is described from Argentina, Pyrophagus Remes Lenicov gen. n., with one new species, P. tigrinus Remes Lenicov & Varela sp. n. The new species, distributing over a wide cultivated area of Northwestern and Central Argentina and recently confirmed as a vector of MRCV (Rio Cuarto maize virus) in experimental conditions, is one of the most frequently found delphacid specie...

Thaiscelis alutaceus gen. et sp. nov. is described from Thailand, which is the first record of the subfamily Caliscelinae from this country. The taxonomic position of the genus Bambusicaliscelis Chen et Zhang, as well as the evolution of the family Caliscelidae, are briefly discussed. The area of origin and the primitive and advanced groups of the family are hypothesized.

A new genus Annamatissus Gnezdilov et Bourgoin gen. nov., including the new species, Annamatissus tami Gnezdilov et Soulier-Perkins sp. nov. is described in the family Caliscelidae from the Bi-Doup massif in Lam Dong Province of Vietnam. The new taxon represents only the second genus of the tribe Caliscelini known from Vietnam. An identification key to separate Gelastissus Kirkaldy from Annamat...