Ornebius, Guerin-Meneville, 1844

Wang, Ning, Che, Zhi-Yong & Ma, Li-Bin, 2023, Ornebius exserolimbus Wang & Ma, sp. nov., a new species of Ornebius (Orthoptera: Mogoplistidae; Mogoplistinae) from China, Zootaxa 5353 (1), pp. 75-81 : 76

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