Paragavialidium Zheng

Deng, Weian, Zheng, Zhemin, Wei, Shizhen & Lin, Minping, 2012, A systematic study of the genus Paragavialidium Zheng (Orthoptera: Tetrigoidea: Scelimeninae), Zootaxa 3582, pp. 48-56 : 52

Key to the species of Paragavialidium Zheng

1. Lateral spines of pronotum pointing laterad ( Figs. 2–3 )....................................................... 2

- Lateral spines of pronotum slightly curved forward ( Figs. 4–9 ).................................................. 3

2. Width of vertex about 1.5 times wider than width of one eye; without a pair of abbreviated carinae beween shoulders ( Fig. 2 ); lower margins of middle femora with two teeth ( Fig. 10 )...................................... P. orthacanum Zheng

- Width of vertex about 1.9 times wider than width of one eye; with a pair of abbreviated carinae beween shoulders ( Figs. 3 ); lower margins of middle femora with three teeth ( Fig. 11 )................................. P. emeiensis Zheng et Cao

3. Middle of anterior margin of pronotum with a cylindrical finger-shaped process ( Fig. 10 )............................. 4

- Middle of anterior margin of pronotum with a triangular finger-shaped process ( Fig. 17 )............................. 5

4. Middle of anterior margin of pronotum with a long cylindrical finger-shaped process; width of vertex about 2.9 times wider than width of one eye; without a pair of abbreviated carinae beween shoulders; lower margins of middle femora with three teeth................................................................................ P. tridentatum Zheng

- Middle of anterior margin of pronotum with a short cylindrical finger-shaped process; width of vertex about 2.0 times wider than width of one eye; with a pair of abbreviated carinae beween shoulders; lower margins of middle femora with two teeth................................................................................ P. serrifemura Zheng et Cao

5. Width of vertex about 1.3 times wider than width of one eye; lower margins of fore femur with one teeth............................................................................................ P. longzhouensis Zheng et Jiang

- Width of vertex about 1.6–2.0 times wider than width of one eye; lower margins of fore femur with two teeth............6

6. Width of vertex about 1.6 times wider than width of one eye; length of pronotum which surpassing behind top of hind femur about 6–7 mm; length of first segment of posterior tarsus equal to third.......................... P. curivispinum Zheng

- Width of vertex about 2.0 times wider than width of one eye................................................... 7

7. Lower margins of fore femur with two teeth; third pulvillus of first segment of posterior tarsus equal to first and second............................................................................. P. sichuanensis Zheng, Wang et Shi

- Lower margins of fore femur with three teeth; third pulvillus of first segment of posterior tarsus longer than first and second.8

8. Apex of hind pronotal process truncate; wings reaching top of hind process of pronotum.... P. hainanensis (Zheng et Liang)

- Apex of hind pronotal process concave; wings not reaching top of hind process of pronotum................................................................................................ P. serrimarginis Deng et Zheng , sp. nov.

Figures

FIGURE 2 – 9. 2: Head and pronotum of P. orthacanum Zheng, dorsal view; 3: Head and pronotum of P. emeiensis Zheng et Cao, dorsal view; 4: Head and pronotum of P. longzhouensis Zheng et Jiang, dorsal view; 5: Body of P. tridentatum Zheng, dorsal view; 6: Head and pronotum of P. serrifemura Zheng et Cao, dorsal view; 7: Head and pronotum of P. curivispinum Zheng, dorsal view; 8: Head and pronotum of P. sichuanensis Zheng, Wang et Shi, dorsal view; 9: Head and pronotum of P. hainanensis (Zheng et Liang), dorsal view.

FIGURE 10 – 17. 10: Body of P. tridentatum Zheng, lateral view; 11: Body of P. emeiensis Zheng et Cao, lateral view; 12: Head and pronotum of P. orthacanum Zheng, lateral view; 13: Body of P. l o n g z h o u e n s i s Zheng et Jiang, lateral view; 14: Body of P. serrifemura Zheng et Cao, lateral view; 15: Body of P. curivispinum Zheng, lateral view; 16: Body of P. sichuanensis Zheng, Wang et Shi, lateral view; 17: Body of P. hainanensis (Zheng et Liang), lateral view.