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A new genus Maculaprosbole of Tettigarctidae with a new species Maculaprosbole zhengi is described based on a complete fossil forewing from the Mesozoic of northeastern China. Due to its broad costal area and clavus, Maculaprosbole zhengi gen. et sp. n. can be attributed to the subfamily Cicadoprosbolinae. This genus is similar to the genera Sanmai and Hirtaprosbole in coloration pattern and forewing venation, respectively. However, it differs from Hirtaprosbole in crossvein rm absent and apical CuA section strongly curved, running along the nodal line for a distance, and Sanmai in transverse coloration mainly focusing on the postnodal area. Herein, the prominent coloration pattern of this new taxon is discussed.