The genus Gonioctena Chevrolat, 1836 is one of the largest genera of the subfamily Chrysomelinae with approximately 110 valid species in nine subgenera distributed in the Holarctic and Oriental regions. The Gonioctena mauroi species-group of the subgenus Brachyphytodecta Bechyně, 1948 is proposed to include four species: Gonioctena mauroi Cho & Borowiec, 2016 (Vietnam), G. medvedevi Cho & Borowiec, 2016 (Vietnam), G. kuatunensis sp. nov. (China) and G. longshengensis sp. nov. (China). They are characterized by the presence of setae on the aedeagus, which is unique within the subgenus. A key to the species, habitus photographs, illustrations of diagnostic characters and a distribution map are provided. Ovoviviparity is newly recorded in G. longshengensis sp. nov.

• Hee-Wook Cho(Yeongnam Regional Office, Animal and Plant Quarantine Agency)