Gibbotettix Zheng, 1992

Deng, Wei-An, 2020, Taxonomic revision of the subfamily Cladonotinae (Orthoptera: Tetrigidae) from China with description of three new species, Zootaxa 4789 (2), pp. 403-440 : 417-418

Key to Chinese species of Gibbotettix Zheng, 1992

1. Lateral margins of vertex slightly elevated; anterior margin of pronotum obtuse angular in the middle.................. 2

- Lateral margins of vertex distinctly elevated; anterior margin of pronotum straight...................................9

2. Lateral margins of pronotum behind humeral angles distinctly contracted backward................................. 3

- Lateral margins of pronotum behind humeral angles not contracted backward, straight................................5

3. Lateral carinae of prozona distinctly contracted backward; humeral angles distinctly obtusely angled................................................................................................... G. vallis Zha & Wen, 2016

- Lateral carinae of prozona parallel; humeral angles arcuate.....................................................4

4. Lateral view, anterior margin of pronotum acute angular, anterior upper margin of pronotum with two concave............................................................................................ .. G. cristata ( Liang, 1995)

- Lateral view, anterior margin of pronotum obtuse angular, anterior upper margin of pronotum with one concave............................................................................... .. G. hupingshanensis Fu & Zheng, 2002

5. Humeral angles wide rounded; upper margin of pronotum oblique toward anterior margin............................6

- Humeral angles obtuse angular; upper margin of pronotum near anterior part distinctly curved.........................7

6. Width of vertex 2.0 times the width of an eye; antennae inserted between lower margin of an eye; median carina of pronotum entire.................................................................. G. guangxiensis Zheng & Jiang, 1998

- Width of vertex 2.5 times the width of an eye; antennae inserted far below lower margin of an eye; median carina of pronotum interrupted......................................................... G. parvipulvillus Deng, Zheng & Wei, 2016

7. Width of vertex 2.3 times the width of an eye; antennae inserted slightly below lower margin of an eye; apex of hind pronotal process with a deeply concave in the middle …........................................ G. leishanensis Zheng, 1992

- Width of vertex 2.6–3.0 times the width of an eye; antennae inserted far below lower margin of an eye; apex of hind pronotal process with weak excision............................................................................. 8

8. Lateral ocelli inserted lower one-third of an eye; pronotal disc at the level of humeral angles not concave in the center............................................................................. G. circinihumerus Zheng & Fu, 2003

- Lateral ocelli inserted between lower margin of an eye; pronotal disc at the level of humeral angles concave in the center................................................................................... G. emeiensis Zheng, 1992

9. Upper margin of pronotum with three concavities and undulated before shoulders in profile, with a small tubercle under each lateral median carina and with a big tubercle under each front shoulder.................................................................................................... G. undatimarginis ( Deng & Zheng, 2012) , comb. nov.

- Upper margin of pronotum straight and or slightly undulated before shoulders in profile, without tubercle under each lateral median carina and without tubercle under each front shoulder................................................. 10

10. Width of vertex 2.0–2.8 times the width of an eye; vertex and frontal ridge are forming a right angle.................. 11

- Width of vertex 3.2–3.4 times the width of an eye; vertex and frontal ridge are forming obtusely rounded or rounded......12

11. Upper margin of pronotum with one concave; humeral angle right angle; apex of hind pronotal process truncated….......................................................................................... G. zhengi Liang, 2011

- Upper margin of pronotum without concave; humeral angle obtuse angular or rounded; apex of hind pronotal process concave in the middle................................................................... G. hongheensis Zheng, 1992

12. Width of longitudinal furrow of frontal ridge 2 time width of basal segment antenna; upper and lower carinae of hind femur undulated................................................................. G. lativertex Zeng & Zheng, 2011

- Width of longitudinal furrow of frontal ridge 1.5 time width of basal segment antenna; upper and lower carinae of hind femur smooth............................................................... .. G. guizhouensis Zeng & Zheng, 2011