Gibbotettix Zheng, 1992

Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2016, Two new species of the genus Gibbotettix Zheng, 1992 (Orthoptera: Tetrigidae, Cladonotinae) from China, Zootaxa 4200 (3), pp. 426-436 : 429-430

Key to the species of Gibbotettix Zheng, 1992

1. Lateral ridge of vertex slightly elevated; anterior margin of pronotum obtuse angular in the middle ( Figs. 1, 3, 5, 7, 9, 11 )... 2

- Lateral ridge of vertex distinctly elevated; anterior margin of pronotum straight ( Figs. 13, 15, 17, 19 )..................10

2. Width of vertex 3 times the width of an eye.................................................................3

- Width of vertex 2 to 2.6 times the width of an eye............................................................5

3. Lateral ocelli inserted lower one-third of an eye; anterior upper margin of pronotum with one concave in profile in male ( Fig. 2 ).............................................................. Gibbotettix circinihumerus Zheng & Fu, 2003

- Lateral ocelli inserted little below or between lower margin of an eye; anterior upper margin of pronotum with two concave in profile in male ( Fig. 4 ).................................................................................4

4. Lateral keels of prozona parallel; humeral angles arcuate.......................... Gibbotettix cristata ( Liang, 1995)

- Lateral keels of prozona distinctly contracted backward; humeral angles obtusely angled. Gibbotettix vallis Zha & Wen, 2016

5. Humeral angle obtuse angular; upper margin of pronotum near anterior part distinctly curved ( Figs. 6, 8, 10 ).............6

- Humeral angle wide rounded; upper margin of pronotum oblique toward anterior margin ( Fig. 12 ).....................9

6. Width of vertex 2.3 times the width of an eye; antennae inserted below lower margin of an eye; top of hind process with a deeply concave in the middle ( Fig. 5 )......................................... Gibbotettix leishanensi s Zheng, 1992

- Width of vertex 2.5–2.6 times the width of an eye; antennae inserted far below lower margin of an eye..................7

7. Humeral angle curved; posterior process of pronotum surpassing apex of hind femur; lower margins of middle femora with one lamellar convex............................................................ .. Gibbotettix serrifemurus sp. nov.

- Humeral angle obtuse angular; posterior process of pronotum reaching knee of hind femur; lower margins of middle femora with two lamellar convex...............................................................................8

8. Apex of hind process truncated with slightly concave; midkeel of pronotum interrupted ( Fig. 7 ).................................................................................................. Gibboettix emeiensis Zheng, 1992

- Apex of hind process with deeply concave; midkeel of pronotum entire ( Fig 9 )..................................................................................................... Gibbotettix hupingshanensis Fu & Zheng, 2002

9. Width of vertex 2.0 times the width of an eye; antennae inserted between lower margin of an eye; midkeel of pronotum entire ( Fig. 11 ); posterior process of pronotum reaching knee of hind femur......... Gibbotettix guangxiensis Zheng & Jiang, 1998

- Width of vertex 2.5 times the width of an eye; antennae inserted far below lower margin of an eye; midkeel of pronotum interrupted; posterior process of pronotum reaching apex of hind femur................... Gibbotettix parvipulvillus sp. nov.

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...... 1 2

11. Upper margin of pronotum with one concave ( Fig. 14 ); humeral angle right angle; apex of hind process truncated ( Fig. 13 )............................................................................... Gibbotettix zhengi Liang, 2011

- Upper margin of pronotum without concave ( Fig. 16 ); Humeral angle obtuse angular or rounded; apex of hind process concave in the middle ( Fig. 15 )..................................................... Gibbotettix hongheensis Zheng, 1992

12. Width of longitudinal furrow of frontal ridge 2 time width of basal segment antenna; posterior process of pronotum surpassing apex of hind femur ( Fig. 17 ); upper and lower keels of hind femur undulated ( Fig. 18 ).................................................................................................. Gibbotettix lativertex Zeng & Zheng, 2011

- Width of longitudinal furrow of frontal ridge 1.5 time width of basal segment antenna; posterior process of pronotum reaching apex of hind femur ( Fig. 19 ); upper and lower keels of hind femur smooth ( Fig. 20 ).................................................................................................. Gibbotettix guizhouensis Zeng & Zheng, 2011

Figures

FIGURES 1 – 12. 1: Body of G. circinihumerus Zheng, dorsal view; 2: Body of G. circinihumerus Zheng, lateral view; 3: Body of G. cristata (Liang, 1995), dorsal view; 4: Body of G. cristata (Liang, 1995), lateral view; 5: Body of G. leishanensi s Zheng, dorsal view; 6: Body of G. leishanensi s Zheng, lateral view; 7: Body of G. emeiensis Zheng, dorsal view; 8: Body of G. emeiensis Zheng, lateral view; 9: Body of G. hupingshanensis Fu & Zheng, dorsal view; 10: Body of G. hupingshanensis Fu & Zheng, lateral view; 11: Body of G. guangxiensis Zheng & Jiang, dorsal view; 12: Body of G. guangxiensis Zheng & Jiang, lateral view. (Figs. 1, 2 after Zheng, 1992 a; Figs 3, 4 after Liang, 1995; Figs 5, 6 after Zheng, 1992 b; Figs 7, 8 after Zheng, 1992 a; Figs 9, 10 after Fu & Zheng, 2002; Figs 11, 12 after Zheng & Jiang, 1998).

FIGURES 13 – 20. 13: Body of G. zhengi Liang, dorsal view; 14: Body of G. zhengi Liang, lateral view; 15: Body of G. hongheensis Zheng, dorsal view; 16: Body of G. hongheensis Zheng, lateral view; 17: Body of G. lativertex Zeng & Zheng, dorsal view; 18: Body of G. lativertex Zeng & Zheng, lateral view; 19: Body of G. guizhouensis Zeng & Zheng, dorsal view; 20: Body of G. guizhouensis Zeng & Zheng, lateral view. (Figs. 13, 14 after Liang, 2011; Figs 15, 16 after Zheng, 1992 a; Figs 17, 18 after Zeng & Zheng, 2011; Figs 19, 20 after Zeng & Zheng, 2011).