Abstract
Mutatus gen. nov. is described from southwest China, including four new species: M.gelao sp. nov. (♂♀, Guizhou Province), M.tianyan sp. nov. (♂♀, Hubei Province), M.tujia sp. nov. (♂♀, Hubei Province), and M.yintiaoling sp. nov. (♂, Chongqing Municipality). This new genus can be differentiated from other phrurolithid genera by the male palp which has a prolateral tegular apophysis and tegular sheet, and by a small protuberance on the female epigynal plate.