Two new species of the planthopper genus Metanigrus Tsaur, Yang & Wilson from China (Hemiptera: Fulgoromorpha: Meenoplidae), with an updated checklist and key to species Author Lv, Shasha Institute of Entomology, Guizhou University, Guiyang, Guizhou 550025, P. R. China. & The Provincial Special Key Laboratory for Development and Utilization of Insect Resources of Guizhou, Guizhou University, Guiyang, Guizhou, 550025 P. R. China. Author Yang, Lin Institute of Entomology, Guizhou University, Guiyang, Guizhou 550025, P. R. China. & The Provincial Special Key Laboratory for Development and Utilization of Insect Resources of Guizhou, Guizhou University, Guiyang, Guizhou, 550025 P. R. China. Author Chen, Xiangsheng Institute of Entomology, Guizhou University, Guiyang, Guizhou 550025, P. R. China. & The Provincial Special Key Laboratory for Development and Utilization of Insect Resources of Guizhou, Guizhou University, Guiyang, Guizhou, 550025 P. R. China. text Zootaxa 2024 2024-03-06 5419 2 289 295 http://dx.doi.org/10.11646/zootaxa.5419.2.8 journal article 10.11646/zootaxa.5419.2.8 1175-5326 10792148 9E853730-34F6-4990-99DB-30B7E1F402EF Key to species of Metanigrus Tsaur, Yang & Wilson, 1986 1. Dorsolateral and middle parts of anal tube without fingerlike process............................................ 2 - Dorsolateral or middle parts of anal tube with fingerlike process................................................ 4 2. Basolateral side of anal tube with a short fingerlike process; outer process of gonostyli with a thumb-like process ( Tsaur et al . 1986 : fig. 15E)......................................................... .. M. yami Tsaur, Yang & Wilson, 1986 - Basolateral side of anal tube with a long curved fingerlike process; outer process of gonostyli without thumb-like process....3 3. Frons with two brownish black patches on both sides; outer process of gonostyli bifurcated nearly equal at apex in lateral view (Lv et al . 2021: figs 10, 13, 16).................................................... M. chromus Lv & Chen, 2021 - Frons medially with a big, longitudinal, brown patch; outer process of gonostyli not bifurcated at apex in lateral view ( Liu & Qin 2020 : figs 3D, 4D)........................................................ .. M. rotundatus Liu & Qin, 2021 4. Dorsolateral and middle parts of anal tube each with a fingerlike process......................................... 5 - Dorsolateral or middle parts of anal tube with a fingerlike process................................................6 5. Middle part of forewing ( Figs 14, 15, 18 ) with black markings, veins of terminal part brownish black. M. angularus sp. nov. - Middle part of forewing without black markings, veins of terminal part yellowish white (Lv et al . 2021: figs 6, 33)...................................................................................... M. gremius Lv & Chen, 2021 6. Distal part of forewing without a large black patch; middle part of anal tube with a fingerlike process (Lv et al . 2021: figs 44, 46, 49)............................................................... M. spinatus Lv, Chen & Bourgoin, 2021 - Distal part of forewing with a large black patch; dorsolateral part of anal tube with a stout fingerlike process............. 7 7. Apex of aedeagus ( Figs 6, 13 ) expanded in lateral view; apex of gonostyli ( Figs 6, 10 ) tapering in lateral view............................................................................................... ... M. afflatus sp. nov. - Apex of aedeagus unexpanded in lateral view; apex of gonostyli fan-shaped in lateral view (Lv et al . 2021: figs 24, 26, 27).............................................................................. M. guttatus Lv & Chen, 2021