A new species of the genus Pseudomegischus van Achterberg, Pseudomegischus yunnanensis sp. n., is described and illustrated from Yunnan Province, China. This is the second species of the genus reported from China. A modified section of the identification key to species of Pseudomegischus is added to include the new species.
Keywords: China; Oriental Region; Pseudomegischus; Stephanidae; new species.