title: Revision of the planthopper genus Nycheuma Fennah (Hemiptera, Fulgoromorpha, Delphacidae).
abstract: Chinese species in the genus Nycheuma Fennah, 1964a (Hemiptera: Fulgoromorpha: Delphacidae: Delphacinae: Delphacini) are revised to include three species: Nycheumacognatum (Muir, 1917), Nycheumadimorpha (Matsumura, 1910) and Nycheumanilotica Linnavuori, 1973. Nycheumacoctum Yang, 1989 is placed in synonymy with Nycheumanilotica Linnavuori, 1973. Nycheumadimorpha (Matsumura, 1910) is newly recorded from China. The generic characteristics are redefined. The main morphological characters, male genitalia of 3 species are described or redescribed and illustrated. A key to Chinese species in the genus is provided.
authors.affiliation: The Special Key Laboratory for Development and Utilization of Insect Resources / College of Animal Sciences, Guizhou University, Guiyang, 550025, P. R. China ; Zunyi Medical University, Zunyi, 563099, P. R. China.
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Hou
authors.affiliation: The Special Key Laboratory for Development and Utilization of Insect Resources / College of Animal Sciences, Guizhou University, Guiyang, 550025, P. R. China.
authors.forename: Xiang-Sheng
authors.initials: XS
authors.lastname: Chen
keywords: Delphacini; Fulgoroidea; Hemiptera; Nycheuma; new record; synonymy; taxonomy