Two new species of the genus Ptychoptera Meigen, 1803 (Diptera, Ptychopteridae) from Yunnan, China with remarks on the distribution of Chinese species

Sixteen known species of the genus Ptychoptera Meigen, 1803 have been recorded from China, of which three occur in Yunnan Province. Herein, two new species from Yunnan, P.cordata sp. nov. and P.yunnanica sp. nov., are described from China. An updated key to Ptychoptera is presented for all Chinese species.