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A new genus and species of Schizopteridae, Cornonannus bui gen. et sp. nov. is described from Yunnan Province, China. The new genus is closest to Pachyplagia Gross, 1951, Ogeria, Distant 1913, and Kaimon Hill, 2004 in morphology, but it can be distinguished from these genera by the male having a frontal process, the absence of pronotal collar, the distinct venation of forewing, a tarsi formula of 3-3-3, and the middle area of abdominal tergites I to VII with small, round tubercles. Photographs of the male habitus, head, thorax, abdomen, appendages, and genitalic structures, as well as scanning electron micrographs of the male head, thorax, abdomen, and genitalic structures and drawings of male genitalia, are provided. Moreover, a key to all known Chinese schizopterid genera is presented.