Key to species of the genus Longicornus Li & Song (Hemiptera: Cicadellidae: Deltocephalinae) with description of a new species Author Gou, Guangli 0000-0002-7458-0808 Institute of Entomology, Guizhou University; The Provincial Special Key Laboratory for Development and Utilization of Insect Resources, Guizhou University; Guiyang, 550025 P. R. China & a 964658243 @ 126. com; https: // orcid. org / 0000 - 0002 - 7458 - 0808 Author Xing, Jichun Institute of Entomology, Guizhou University; The Provincial Special Key Laboratory for Development and Utilization of Insect Resources, Guizhou University; Guiyang, 550025 P. R. China text Zootaxa 2022 2022-04-27 5129 2 250 256 journal article 55817 10.11646/zootaxa.5129.2.5 010f8472-49eb-41d3-ac3c-809e5d41dc61 1175-5326 6500911 9D2333D2-5CF3-4925-987F-0BBBA64019E0 Key to species (males) of Longicornus (Modified from Fang & Xing, 2019 ) 1. Aedeagal shaft with pair of processes arising basally (Figs. 19,20,25,26).......................................... - Aedeagal shaft with a pair of processes arising apically(Figs. 21,22,23,24,27,28,32,33)............................... 2. Aedeagal shaft with pair of furcate processes arising from ventral margin near base (Figs. 25,26)............... L. furcatus - Aedeagal shaft with two pairs of processes medially on dorsal margin (Figs.19,20)....................... L. biprocessus 3. Aedeagal shaft processes about as long as shaft (Figs. 23,24,32,33).............................................. 4 - Aedeagal shaft processes shorter than shaft (Figs. 21,22, 27,28).................................................. 4. Aedeagus with furcate process arising apically in lateral view(Figs.32,33)........................... L. grossus sp.nov. - Aedeagus with slender process arising apically in lateral view(Figs.23,24)............................ L. flavipuncatus 5. Aedeagus long, with apical processes shorter than ⅔ length of shaft (Figs.27,28)............................. L. longus - Aedeagus short and stout, with apical processes shorter than ¼ length of shaft (Figs.21,22)................. L. brevispinus