Checklist to species of Longicornus L. biprocessus Fang & Xing, 2018 Distribution: China (Sichuan) L. brevispinus Fang & Xing, 2019 Distribution: China (Yunnan) L. concavus sp. nov. Distribution: China (Tibet) L. nonprocessus sp. nov. Distribution: China (Tibet) L. flavipuncatu s Li & Song, 2008 Distribution: China (Sichuan, Guizhou, Yunnan) L. furcatus Fang & Xing, 2018 Distribution: China (Sichuan) L. grossus Gou & Xing, 2022 Distribution: China (Yunnan) L. longus Xing & Li, 2024 Distribution: China (Yunnan) Key to species (males) of Longicornus (modified from Gou & Xing, 2022) 1. Aedeagus without processes.......................................................... L. nonprocessus sp. nov. Aedeagus with processes............................................................................... 2 2. Aedeagus with pair of processes arising basally............................................................. 3 Aedeagus with pair of processes arising apically............................................................. 5 3. Aedeagal shaft with two pairs of processes medially on dorsal margin.................................. L. biprocessus Aedeagus with pair of furcate processes arising from ventral margin near base..................................... 4 4. Long ventral branches of aedeagal processes approximately long spikes................................... L. furcatus Long ventral branches of aedeagal processes approximately subtriangular, thin, and its outer margin with fine teeth............................................................................................ L. concavus sp. nov. 5. Aedeagal processes about as long as shaft.................................................................. 6 Aedeagal processes shorter than shaft..................................................................... 7 6. Aedeagus with furcate process arising apically in lateral view.......................................... L. grossus Aedeagus with simple, slender process arising apically in lateral view................................ L. flavipuncatus 7. Aedeagus long, with apical processes about 1/2 length of shaft.......................................... L. longus Aedeagus short and stout, with apical processes shorter than ¼ length of shaft........................... L. brevispinus Taxonomy Longicornus Li & Song Longicornus Li & Song, 2008: 27; Li et al. 2011: 110; Zahniser & Dietrich 2013: 152; Fang & Xing 2018: 435; Fang & Xing 2019: 68; Gou & Xing 2022: 251; Dmitriev et al. 2024: 275. Type species: Longicornus flavipuncatus Li & Song, 2008 Remarks. For the relationship and diagnosis of Longicornus see Fang & Xing (2018: 436). Distribution. China (Guizhou, Sichuan, Yunnan, Tibet)

Published as part of Hu, Shangmi & Xing, Jichun, 2024, Description of two new species of the leafhopper genus Longicornus (Hemiptera: Cicadellidae: Deltocephalinae) from China, pp. 571-578 in Zootaxa 5477 (5) on page 572, DOI: 10.11646/zootaxa.5477.5.4, http://zenodo.org/record/12733429