Dicrotendipes weiqiangensis sp. nov. from Xianju National Park, Zhejiang, China is described and nominated. This new species is morphologically most similar to D. nudus Qi, Lin Wang, 2012. It can be distinguished from the known species in the genus by R_（4＋5） without seta and the shape of the superior volsella, which is semi-triangular viewed dorsally and spherical viewed laterally. Diagnostic characteristics of the male imago（e.g., wing, hypopygium, anal point and superior volsella） are illustrated. A key to the males of Dicrotendipes in China is also provided.
Polypedilum （Tripodura） cypellum sp. nov. from Xishan Island, Zhejiang Province is described. The new species is most similar to P. （T.） harteni Andersen ＆ Mendes, 2010 morphologically. It can be distinguished from the known species in this genus by the goblet-shaped superior volsella. Diagnostic characters of the male imago （wing, fore tibial apex, hypopygium and superior volsella） are illustrated.
Stenochironomus xianjuensis sp. nov. from Xianju National Park, Zhejiang Province, China, is described. The new species is morphologically similar to S. koreanus Borkent, 1984. It can be distinguished from known species in the genus by the following combination of characters： wing with two dark spots surrounding RM and FCu; superior volsella short and small, spatulate, with 4 long setae; inferior volsella elongate, with 3 long setae and a slender terminal spine, posterior margin of tergite IX with 8-10 setae and 8 spines.
A new species, Polypedilum（Polypedilum） xianjuensis sp. nov. collected from the Xianju National Park, Zhejiang Province is described and illustrated. The new species is characterized by dark brown body coloration, small antennal ratio（0.60–0.88） and superior volsella without lateral seta.
The genus Psilometriocnemus Saether is newly-recorded from the Oriental Region of China. One new species Psilometriocnemus scetheri sp. nov. is described and illustrated as the male imago. The new species is characterized by a robust anal point, reduced inferior volsella and crista dorsalis. The generic diagnosis of the genus is emended and a key to adult males of Psilometriocnemus worldwide is presented.
A catalogue of Paratrichocladius in China is provided along with a key to the males of Paratrichocladius from China. A newly recorded species Paratrichocladius yakukeleus Sasa et Suzuki from Oriental China is described and the male is illustrated.
The subgenus Nostocoladius of Cricotopus is recorded in Oriental China for the first time. The detail redeseription of Cricotopus （Nostocoladius） lygropis Edwards is presented. C. （N..） seiryuabeus Sasa, Suzuki ＆ Sakai is treated as a junior synonym of C. （N.） lygropis. A key to the known male imagines in the world of the subgenus Nostocoladius is given.
