Macromotettix Günther, 1939

Lu, Xiang-Yi & Deng, Wei-An, 2021, New genus and new species of the subfamilyMetrodorinae from China (Orthoptera Tetrigidae), Zootaxa 4964 (2), pp. 345-362 : 351-352

Key to species of Macromotettix Günther, 1939

Modified from Deng et al., (2018)

1. Head distinct exserted above pronotal surface............................................................... 2

- Head not or slightly exserted above pronotal surface......................................................... 3

2. Upper margin of pronotum straight in profile; ventral margins of middle femora undulate; hind wings not reaching the caudal end of pronotum. Distribution in Vietnam ( Tonkin).................................... M. tonkinennis Günther, 1939

- Upper margin of pronotum undulate before shoulders in profile; ventral margins of middle femora straight; hind wings reaching the caudal end of pronotum. Distribution in Indonesia (Sumatra).................... M. quadricarinatus ( Bolivar, 1898)

3. Frontal costa before eyes not visible...................................................................... 4

- Frontal costa before eyes visible, vertex and frontal costa forming a round or obtuse shape.......................... 10

4. Hind wings strongly reduced and just reaching the base of hind femora........................................... 5

- Hind wings elongated and extending beyond the middle of hind femora.......................................... 7

5. Tegmina degenerate and very small; ventral margins of middle femora with two teeth. Distribution in China (Sichuan).................................................................................. M. microptera Deng , sp. nov.

- Tegmina normal; ventral margins of middle femora without tooth............................................... 6

6. Disc of pronotum coarse, with numerous protuberances; disc of pronotum concave between shoulders; ventral margins of fore and middle femora slightly undulate. Distribution in China (Sichuan)...................... M. sichuanensis Deng, 2018

- Disc of pronotum smooth; disc of pronotum convex between shoulders; ventral margins of fore and middle femora straight. Distribution in China (Guangxi)....................................... M. xinganensis Zheng, Zhang & Dang, 2009

7. Width of vertex narrower than the width of an eye; hind wings reaching the caudal end of pronotum................... 8

- Width of vertex wider than or equal to the width of an eye; hind wings not reaching the caudal end of pronotum.......... 9

8. Anterior margin of vertex straight; upper margin of pronotum straight in profile. Distribution in Solomon Islands (Guadalcanal)....................................................................... M. solomonennis Günther, 1972

- Anterior margin of vertex arched; upper margin of pronotum undulate before the shoulders in profile. Distribution in China (Taiwan) ..................................................................... M. sokutsuensis ( Karny, 1915)

9. Disc of pronotum smooth; ventral margins of middle femora straight. Distribution in Samoan Islands............................................................................................... M. compactus ( Chopard, 1929)

- Disc of pronotum coarse; ventral margins of middle femora undulate. Distribution in China (Hunan and Guangxi)............................................................................. M. luoxiaoshanensis Zheng & Fu, 2000

10. Width of vertex 1.5–2.0 times the width of an eye.......................................................... 11

- Width of vertex slightly wider than or equal to or narrower than the width of an eye............................... 13

11. Lateral carinae of prozona parallel; upper margin of pronotum undulate, median carina high and lamellar before shoulders in profile and suddenly depressed behind shoulders; hind wings strongly reduced and just reaching the base of hind femora. Distribution in China (Sichuan)..................................................... M. undulatifemura Deng, 2018

- Lateral carinae of prozona constricted backwards; upper margin of pronotum slightly undulate, median carina low in profile; hind wings elongated and extending beyond the middle of hind femora......................................... 12

12. Width of vertex 1.5 times the width of an eye; antenna inserted between lower margins of eyes; with abbreviated carinae between shoulders. Distribution in China (Yunnan and Guangxi)............................ M. torulosinota Zheng, 1998

- Width of vertex 2.0 times the width of an eye; antenna inserted below lower margins of eyes; without abbreviated carinae between shoulders. Distribution in China (Shaanxi).............................. M. qinlingensis Zheng, Wei & Li, 2009

13. Vertex and frontal costa forming a round shape in profile..................................................... 14

- Vertex and frontal costa forming an obtused angular in profile................................................. 17

14. In lateral view, frontal costa not concave between eyes; upper margins of hind femora smooth....................... 15

- In lateral view, frontal costa concave between eyes; upper margins of hind femora distinct serrated.................... 16

15. Hind wings long, reaching the middle of hind tibia. Distribution in China (Yunnan).......... M. longipennis Zheng, 1998

- Hind wings very short, only reaching the middle of hind femora. Distribution in China (Yunnan)..................................................................................................... M. brachynota Zheng, 1998

16. Ventral margins of middle femora straight; width of midfemur narrower than width of visible part of tegmina. Distribution in China (Guangxi)....................................................... M. serrifemoralis Zheng & Jiang, 2002b

- Ventral margins of middle femora undulate; width of midfemur wider than width of visible part of tegmina. Distribution in China (Guangxi)....................................................... M. napoensis (Zheng, 2002) nom. nov.

17. Lateral carinae of prozona parallel....................................................................... 18

- Lateral carinae of prozona constricted backwards........................................................... 23

18. Ventral margins of middle femora with long hairs; median carina of dorsal side of hind femur serrated, with large teeth. Distribution in China (Yunnan)................................................... M. wuliangshana Zheng & Ou, 2003

- Ventral margins of middle femora without long hair; median carina of dorsal side of hind femur serrated or smooth, without large tooth.......................................................................................... 19

19. Disc of pronotum smooth; hind wings extending beyond the caudal end of pronotum; full length of hind tibia black. Distribution in China (Guangxi)...................................................... M. yaoshanensis Zheng & Jiang, 2000

- Disc of pronotum coarse, with numerous protuberances; hind wings not reaching the caudal end of pronotum; full length of hind tibia not black, it with brown rings....................................................................... 20

20. Width of vertex wider than the width of an eye............................................................. 21

- Width of vertex equal to or narrower than the width of an eye................................................. 22

21. In lateral view, frontal costa concave between eyes; with abbreviated carinae between shoulders. Distribution in China (Guangxi)........................................................................ M. zhengi Deng , sp. nov.

- In lateral view, frontal costa straight and not concave between eyes; without abbreviated carinae between shoulders. Distribution in China (Guangxi)................................................. M. nigrituberculus Zheng & Jiang, 2006

22. Width of vertex 1.1 times the width of an eye; upper margin of pronotum undulate in profile; ventral margins of middle femora straight. Distribution in China (Guangxi)....................................... M. tianlinensis Liang & Jiang, 2004

- Width of vertex 0.7 times the width of an eye; upper margin of pronotum convex before shoulders in profile; ventral margins of middle femora slightly undulate. Distribution in China (Guizhou and chongqing)........ M. brachyptera Deng , sp. nov.

23. Head not slightly exserted above pronotal surface; width of middle femora narrower than the width of visible part of tegmina. Distribution in China (Hunan)................................................... M. nigritibis Zheng & Fu, 2005

- Head slightly exserted above pronotal surface; width of middle femora wider than the width of visible part of tegmina.... 24

24. Disc of pronotum smooth; width of vertex equal to the width of an eye. Distribution in China (Yunnan).................................................................................... M. wangxiangtaiensis Zheng & Ou, 2010

- Disc of pronotum coarse, with numerous protuberances; width of vertex narrower than the width of an eye............. 25

25. In profile, frontal costa without concave between lateral ocelli; upper margin of pronotum slightly convex before shoulders and straight behind shoulders in profile; ventral margins of middle femora undulate. Distribution in China (Guangxi)................................................................................ M. longtanensis Zheng & Jiang, 2003

- In profile, frontal costa concave between lateral ocelli; upper margin of pronotum undulate in profile; ventral margins of middle femora straight...................................................................................... 26

26. Disc of pronotum with convex between shoulders; hind wings far not reaching apex of pronotum. Distribution in China (Guangxi)............................................................ M. convexa Deng, Zheng & Zhan, 2010

- Disc of pronotum flat between shoulders; hind wings reaching apex of pronotum. Distribution in China (Guangxi)......................................................................... M. guangxiensis Deng, Zheng & Wei, 2007b