Abstract
Four species of the genus Luzonomyza Malloch, 1929 from southwest China are described as new to science: Luzonomyzavittifacies Li & Yang, sp. nov., L.serrata Li & Yang, sp. nov., L.honghensis Li & Yang, sp. nov., and L.brevis Li & Yang, sp. nov. A key to Luzonomyza species is also presented.