A new genus, Duffelsa gen. n., with descriptions of three new species and one new combination (Hemiptera: Cicadidae) Author Wang, Jiali Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A & F University, Yangling 712100, Shaanxi, China Author Jiang, Jinyuan Jinyuan Jiang Private Cicada Collection, Wuxi 214031, Jiangsu, China Author Wei, Cong Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A & F University, Yangling 712100, Shaanxi, China text Zootaxa 2023 2023-08-02 5323 3 396 408 http://dx.doi.org/10.11646/zootaxa.5323.3.3 journal article 263440 10.11646/zootaxa.5323.3.3 240ad2a5-d105-410b-9557-7a8b4da0b037 1175-5326 8209532 5FA44D2A-B196-440A-9113-2A14FE137BCC Key to species of Duffelsa gen. n. (males) 1. Large cicadas, body length longer than 46 mm .............................................................. 2 - Medium cicadas, body length shorter than 38 mm ............................................................ 3 2. Median lobe of uncus bifurcated with the two sub-lobes distinctly separated from each other............ D. grandia sp. n. - Median lobe of uncus bifurcated with the two sub-lobes meeting at inner margins...................... D. rubida sp. n. 3. Forewing with fuscous spots on transverse veins of apical cells 2 and 3.......................... D. orientalis comb. n. - Forewing with fuscous spots on transverse veins of apical cells 2, 3 and 5............................ D. parvula sp. n.