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.