Three new species of Mecoptera (Insecta, Antliophora) from Yunnan, China

The hangingflies (Bittacidae Handlirsch, 1906) and the scorpionflies (Panorpidae Latreille, 1802) are the two largest groups within the holometabolous order Mecoptera Packard, 1886. In this paper, a new hangingfly and two new scorpionflies are described: 1) Bittacus yunlongensis sp. nov., characterized by the greatly elongated and finger-shaped distal portion of male epandrial lobe, and greatly elongated upper and lower branches of proctiger; 2) Dicerapanorpa dajinhuang sp. nov., recognized mainly by the ventral branch of male parameres bearing small barbs on inner margin; and 3) D. jialiangjiei sp. nov., characterized by the bifurcated middle branch and sinuate distal portion of dorsal branch of male parameres. These new discoveries enrich the known species number of Bittacus Latreille, 1802 from one to two and Dicerapanorpa Zhong & Hua, 2013 from twelve to fourteen in Yunnan Province.