Four species of Minettia Robineau-Desvoidy, 1830 from Southwest China are described as new to science: Minettia (Minettiella) dashahensis sp. nov., M. (Minettiella) longispina sp. nov., M. (Minettiella) membranacea sp. nov. and M. (Minettiella) zhaotongensis sp. nov. A key to the species of the subgenus Minettiella of the world is presented.