Three new fold-winged crane flies of the genus Ptychoptera Meigen, 1803 (Diptera, Ptychopteridae) from southern China

Three new Ptychoptera Meigen, 1803 species from southern China, P. hekouensis sp. nov., P. longa sp. nov., and P. xiaohuangshana sp. nov., are described and illustrated. These new species are mainly distinguished from congeners by their body colors and male genitalia. The genus Ptychoptera is recorded from Guang-dong, China for the first time. An updated key to all Chinese Ptychoptera species is provided.