Ornebius exserolimbus Wang & Ma, sp. nov., a new species of Ornebius (Orthoptera: Mogoplistidae; Mogoplistinae) from China Author Wang, Ning College of Life Sciences, Shaanxi Normal University, Xi’an, China, 710119 Author Che, Zhi-Yong Tiaobahe Station of Mengyang Management and Protection Institution, Xishuangbanna National Nature Reserve, Jinghong, China, 666106 Author Ma, Li-Bin College of Life Sciences, Shaanxi Normal University, Xi’an, China, 710119 text Zootaxa 2023 2023-10-06 5353 1 75 81 http://dx.doi.org/10.11646/zootaxa.5353.1.5 journal article 10.11646/zootaxa.5353.1.5 1175-5326 8426861 885C6296-D212-48D1-8E95-B15ECEC3CB8F Key to the known species of Ornebius from China 1. Wingless; fore tibia without tympanum..................................................... O . apterus He, 2018 - Winged; fore tibia with internal tympanum................................................................. 2 2. Anterior margin of pronotal disc with distinctly protuberance................................. O . exserolimbus sp. n. - Anterior margin of pronotal disc straight................................................................... 3 3. Tegmen with only a small portion exposed, and without black markings.......................................... 4 - Tegmen with black or brown markings.................................................................... 5 4. Body black; surrounding of the pronotum and hind femur covered with white scales.......... O. fuscicerci (Shiraki, 1930) - Body yellow; posterior margin of pronotum covered with white scales.................... O. longipennis (Shiraki, 1930) 5. Tegmen slightly exposed; outer margin of posterior parts with black markings on each side... O. bimaculatus (Shiraki, 1930) - Full-field or apical field of tegmen with black or brown markings............................................... 6 6. Tegmen black or brown throughout................................................. O. infuscatus (Shiraki, 1930) - Apical field of tegmen with black or brown strip............................................................. 7 7. Head with a distinct red transverse groove with middle raised and sides sunken in front of pronotum.......................................................................................... O. carnificare He, Zhang & Ma, 2021 - Head broad and flattened and without visible transverse groove................................................. 8 8. The male phallic complex, clockwork-like; genitalia with spermatophore sac spiral................................ 10 - Characteristics of male genitalia different from the above...................................................... 9 9. Tongue-shaped epiphallus which covers most of the central lobe; central lobe of phallus with lateral valves dorsoventrally compressed with acute apex, ejaculatory duct with apex truncated and a little notched.......... O. fastus Yang & Yen, 2001 - Male phallus not as above, armed with strongly sclerotized, compressed internal sclerites with acute apex......................................................................................... O. kanetataki ( Matsumura, 1904 ) 10. Lateral lobe of pronotum armed with abundant setae........................................................ 11 - Lateral lobe of pronotum without setae................................................................... 13 11. Lateral lobe of pronotum with white setae, covered with black and white scales.................. O. polycomus He, 2017 - Lateral lobe of pronotum armed with yellow setae and almost no scales......................................... 12 12. Supra-anal plate with distinct angular projections on both sides.......................... O. formosanus ( Shiraki, 1911 ) - Supra-anal plate trapezoidal without angular projections............................. O. lunam He, Zhang & Ma, 2021 13. Both head and pronotum yellow............................................. O. aurumalas He, Zhang & Ma, 2021 - Both head and pronotum reddish brown.................................................................. 14 14. Mirror well developed, length-to-width ratio of 2:3; hind tibia armed with three pairs of dorsal spurs...................................................................................... O. yunnanensis Wang, Zhang & Liu, 2020 - Length of mirror longer than the width; outer apical spurs of hind tibia three and inner apical spurs two... O. panda He, 2019