Macromotettix Günther, 1939

Deng, Wei-An, Xin, Lei, Wei, Qiao & Chen, Ya-Zhen, 2018, Two new species of the genus Macromotettix Günther, 1939 (Orthoptera: Tetrigidae, Metrodorinae) from China, with a key to the species of the genus, Zootaxa 4370 (4), pp. 421-430 : 422-423

Key to the species of Macromotettix Günther, 1939

1. Body slender, hind process of pronotum far surpassing behind apex of hind femur................................... 2

- Body stubby, hind process of pronotum not reaching, reaching or slightly surpassing apex of hind femur................ 5

2. Width of vertex as broad as the width of an eye; lateral keels of prozona constricted backwards; hind wings extending beyond the caudal end of pronotum. Distribution in China ( Yunnan)............................. M. longipennis Zheng, 1998

- Width of vertex narrower than the width of an eye; lateral keels of prozona parallel; hind wings not reaching or reaching the caudal end of pronotum................................................................................. 3

3. Upper margin of pronotum straight in profile; lower margins of middle femora slightly 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; lower margins of middle femora straight; hind wings reaching the caudal end of pronotum.............................................................................. 4

4. Width of vertex distinct narrower than the width of an eye (10:18); antenna inserted below lower margins of eyes; disc of pro- notum smooth. Distribution in Indonesia ( Sumatra)............................. M. quadricarinatus ( Bolivar, 1898)

- Width of vertex slightly narrower than the width of an eye (15:18); antenna inserted between lower margins of eyes; disc of pronotum with numerous small tubercles. Distribution in China ( Taiwan)................ M. sokutsuensis ( Karny, 1915)

5. Frontal costa before eyes not visible......................................................................6

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

6. Hind wings strongly reduced and just reaching the base of hind femora........................................... 7

- Hind wings elongated and extending beyond the middle of hind femora........................................... 8

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

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

8. Width of vertex narrower than the width of an eye; upper margin of pronotum straight in profile; hind wings reaching the cau-

dal end of pronotum. Distribution in Solomon Islands ( Guadalcanal)................... M. solomonennis Günther, 1972 - Width of vertex wider than or equal to the width of an eye; upper margin of pronotum undulate in profile; hind wings not reaching the caudal end of pronotum...................................................................... 9

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

- Disc of pronotum coarse; lower 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 keels 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 sp. nov

- Lateral keels 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 an obtused angular in profile................................................. 14

- Vertex and frontal costa forming a round shape in profile..................................................... 24

14. Hind process of pronotum not reaching apex of hind femur.................................................... 15

- Hind process of pronotum reaching or slightly surpassing apex of hind femur.....................................21

15. Lateral keels of prozona parallel......................................................................... 16

- Lateral keels of prozona constricted backwards.............................................................19

16. Disc of pronotum smooth; hind wings extending beyond the caudal end of pronotum; 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; hind tibia not black.............................................................................................. 17

17. Width of vertex wider than the width of an eye; with abbreviated carinae between shoulders. Distribution in China ( Guangxi)................................................................................... M. zhengi Deng, 2016

- Width of vertex equal to or narrower than the width of an eye; without abbreviated carinae between shoulders........... 18

18. Width of vertex 1.1 times the width of an eye; upper margin of pronotum undulate in profile; lower 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; lower margins of middle femora slightly undulate. Distribution in China ( Guizhou and chongqing)............. M. brachyptera Deng, 2016

19. Disc of pronotum smooth; width of middle femora wider than the width of visible part of tegmina. Distribution in China ( Yunnan).............................................................. M. wangxiangtaiensis Zheng & Ou, 2010

- Disc of pronotum coarse, with numerous protuberances; width of middle femora narrower than or equal to the width of visible part of tegmina...................................................................................... 20

20. Head not exerted above upper level of pronotum; width of middle femora narrower than the width of visible part of tegmina. Distribution in China ( Hunan)................................................... M. nigritibis Zheng & Fu, 2005

- Head exerted above upper level of pronotum; width of middle femora equal to the width of visible part of tegmina. Distribution in China ( Guangxi).................................................... M. convexa Deng, Zheng & Zhan, 2010

21. Lateral keels of prozona constricted backwards............................................................. 22

- Lateral keels of prozona parallel......................................................................... 23

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

- In profile, frontal costa distinctly concave between lateral ocelli; upper margin of pronotum undulate in profile; lower margins of middle femora straight. Distribution in China ( Guangxi).................. M. guangxiensis Deng, Zheng & Wei, 2007

23. Width of vertex narrower than the width of an eye; with abbreviated carinae between shoulders of pronotum; mid keel of dorsal side of hind femur serrated, with large teeth. Distribution in China ( Yunnan)...... M. wuliangshana Zheng & Ou, 2003

- Width of vertex 1.3 times the width of an eye; without abbreviated carinae between shoulders of pronotum; mid keel of dorsal side of hind femur smooth. Distribution in China ( Guangxi)............................ M. nigritubercle Zheng, 2006

24. Hind wings not reaching the caudal end of pronotum, and reaching five sixths of lower margin of pronotum; mid keel of dorsal side of hind femur smooth; hind femur brown. Distribution in China ( Yunnan).............. M. brachynota Zheng, 1998

- Hind wings reaching the caudal end of pronotum; mid keel of dorsal side of hind femur serrated; lower side of outer part of hind femur black. Distribution in China ( Guangxi)........................... M. serrifemoralis Zheng & Jiang, 2002