英文摘要：A new species  Oncopsis wanglangensis sp. nov. from the Wanglang National Nature Reserve, Sichuan province, is described and illustrated.  O. wanglangensis sp. nov. is generally similar to  O. damingshenensis Dai, Li & Li, 2018, but can be distinguished from the latter by the yellowish body coloration, more slender aedeagal shaft, and the well-developed and stronger dorsal connective with serrate margins on apical halves of both branches.  O. odontoidea Dai & Li, 2013 is redescribed and found to be the first record in Sichuan province. A checklist and distribution for species of  Oncopsis from China are provided along with a key to male  Oncopsisspecies from China.

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