The genus Neoennearthron Miyatake, 1954 is newly recorded from China, with a new species, N. baoshanense sp. nov., described and illustrated. The new species can be distinguished from its congeners mainly by the morphology of the male genitalia: tegmen with a broadly rounded apex, the middle part of the apex not directly connected, only joined by tissues with low sclerotization, and concave at the middle; apicolateral corners deeply emarginate and elliptically convex with a notch in dorsal view. An updated key to all known species of the genus Neoennearthron is also provided.