Abstract: This paper deals with a taxonomic study of Tagasta Bolivar, 1905 from China, with a description of a new species Tagasta gui sp. nov. The new species is similar to T. marginella (Thunberg, 1815), but the tegmina short, only reaching the base of epiproct in male; lateral lobe of pronotum without white lower margin and hind tarsi baby pink. A key to known species of the genus Tagasta from China is given. The type specimens are deposited in the Museum of Hebei University (MHU), China.

Key words: Orthoptera, Acridoidea, Chrotogonidae, Tagasta taxonomy, new species, China