Formosatettix Tinkham, 1937

Deng, Wei-An, Luo, Jie-Ling, Huang, Chao-Mei & Lin, Li-Liang, 2023, Review of the genus Formosatettix Tinkham (Orthoptera: Tetrigidae) with description of new taxa, new synonymy and an updated key to species, Zootaxa 5228 (3), pp. 201-243 : 203-204

publication ID

https://doi.org/ 10.11646/zootaxa.5228.3.1

publication LSID

lsid:zoobank.org:pub:CF7244F1-F2FA-4435-BD96-5492BC1AF6B8

DOI

https://doi.org/10.5281/zenodo.7542052

persistent identifier

https://treatment.plazi.org/id/3922878E-B76A-7959-FF7D-F17BFE3BD7BA

treatment provided by

Plazi

scientific name

Formosatettix Tinkham, 1937
status

 

Key to the species of Formosatettix Tinkham, 1937 View in CoL View at ENA

1. Apex of hind pronotal process concave.................................................................... 2

- Apex of hind pronotal process sharp rounded or rounded or widely rounded...................................... 11

2. Lower carinae of middle femora straight.................................................................. 3

- Lower carinae of middle femora undulated................................................................. 4

3. Width of vertex 1.3 times width of eye; lower margin of hind pronotal process straight. Distribution: China (Sichuan).......................................................................... F. nigrimaculatus Lin, Wei & Deng, 2013 View in CoL

- Width of vertex 1.6 times width of eye; lower margin of hind pronotal process curved. Distribution: China (Jiangxi)................................................................................ F. lushanensis Zheng & Yang, 1988 View in CoL

4. Lateral carinae of metazona straight....................................................................... 5

- Lateral carinae of metazona curved....................................................................... 6

5. Lower margin of hind pronotal process straight; frontal ridge between antennae distinct wider than antennal groove diameter. Distribution: China (Henan)......................................................... F. henanensis Liang, 1991 View in CoL

- Lower margin of hind pronotal process curved; frontal ridge between antennae narrower than or equal to antennal groove diameter. Distribution: China (Sichuan)........................................... F. gonggashanensis Zheng, 1992 View in CoL

6. Width of vertex 1.6 times width of eye; middle of posterior margin of female subgenital plate concave. Distribution: China (Hubei)............................................................... .. F. tiantangensis Zheng & Zhong, 2000 View in CoL

- Width of vertex 2–2.5 times width of eye; middle of posterior margin of female subgenital plate with a triangular projecting or with three teeth....................................................................................... 7

7. Antennal grooves inserted below inferior margin of compound eyes; hind pronotal process broad and short...............8

- Antennal grooves inserted between inferior margin of compound eyes; hind pronotal process narrow and short........... 9

8. Frontal costa concave between eyes; lateral (paired) ocelli located in lowest third of compound eye height; posterior half of pronotum with sporadic tubercles; ventral margins of fore femora sinuate and with one or two teeth. Distribution: China (Sichuan)................................................................. F. shuimogouensis Deng , sp. nov.

- Frontal costa straight and not concave between eyes; lateral ocelli located in middle of compound eye height; surface of pronotum smooth; ventral margins of fore femora straight and without tooth. Distribution: China (Yunnan)...................................................................................... F. curvimarginus Zheng & Ou, 2009 View in CoL

9. Width of vertex 2.5 times width of eye; frontal costa in lateral view distinctly concave before eyes. Distribution: China (Hubei).............................................................. F. mufushanensis Zheng & Zhong, 2005 View in CoL

- Width of vertex 2 times width of eye; frontal costa in lateral view straight or slightly concave before eyes.............. 10

10. Frontal costa in lateral view slightly concave before eyes; lower margin of hind process curved. Distribution: China (Yunnan)......................................................................... F. xianggelila Zheng & Ou, 2004 View in CoL

- Frontal costa in lateral view straight before eyes; lower margin of hind process straight. Distribution: China (Yunnan)................................................................................ F. latifemurus Deng , nom. nov.

11. Median carina of pronotum in profile distinct elevated and arch-like........................................... 12

- Median carina of pronotum in profile low and straight or only slightly protruding near the anterior margin.............. 52

12. Frontal costa in lateral view distinctly concave before eyes................................................... 13

- Frontal costa in lateral view straight or slightly concave before eyes............................................ 30

13. Lower margin of hind pronotal process straight............................................................. 14

- Lower margin of hind pronotal process curved, lateral carinae of metazona also curved............................. 16

14. Width of vertex 1.6 times width of eye; lower carinae of mid femora straight. Distribution: China (Xizang)............................................................................ F. nyalamensis ( Zheng & Lin, 2015) , comb. nov.

- Width of vertex 2.7–3.0 times width of eye; lower carinae of mid femora sinuate.................................. 15

15. Vertex and frontal costa form a rounded angle in profile; anterior margin of pronotum in dorsal view acute angle projecting. Distribution: China (Shaanxi, Gansu and Henan)....................................... F. qinlingensis Zheng, 1982 View in CoL

- Vertex and frontal costa form an acute angle in profile; anterior margin of pronotum in dorsal view obtuse angle projecting. Distribution: China (Hubei)............................................ F. prominemarginus Zhong & Zheng, 2003 View in CoL

16. Fastigium of vertex in dorsal view not surpassing the anterior margin of eyes; width of vertex 1.3–1.8 times width of eye.. 17

- Fastigium of vertex in dorsal view distinctly surpassing the anterior margin of eyes; width of vertex 2.0–3.5 times width of eye................................................................................................ 18

17. Width of vertex 1.8 times width of eye; lateral carinae of prozona parallel. Distribution: Nepal (Seti).... F. seti Ingrisch, 2006 View in CoL

- Width of vertex 1.3–1.6 times width of eye; lateral carinae of prozona constricted backwards. Distribution: China (Jilin) and Japan (Shizuoka)............................................................. F. surugaensis Ishikawa, 2004 View in CoL

18. Anterior margin of pronotum in dorsal view obtuse angle projecting............................................ 19

- Anterior margin of pronotum in dorsal view acute angle projecting............................................. 25

19. Lower carinae of mid femora straight; width of longitudinal furrow of frontal ridge distinctly wider than antennal groove diameter........................................................................................... 20

- Lower carinae of mid femora sinuate; width of longitudinal furrow of frontal ridge equal to antennal groove diameter.... 21

20. Medial carina of vertex straight in lateral view; external lateral carina of metazona curved and polyline. Distribution: China (Zhejiang)............................................................... F. longwangshanensis Zheng, 1998 View in CoL

- Medial carina of vertex distinctly arcuate in lateral view; external lateral carina of metazona curved but not polyline. Distribution: China (Zhejiang).............................................................. F. nanjiensis Zha & Ding, 2021

21. Pronotum coarse, disc with many large wrinkles and notches or dorsum of pronotum behind shoulders with a row of parallel transverse carinae.....................................................................................22

- Dorsum of pronotum behind shoulders smooth, without large wrinkles and notches and parallel transverse carina........ 23

22. Dorsum of pronotum behind shoulders with a row of parallel transverse carinae. Distribution: China (Yunnan)................................................................................... F. wulaoshanensis Zhen et al., 2010 View in CoL

- Dorsum of pronotum with many large wrinkles and notches. Distribution: Nepal (Panchthar).... .. F. martensi Ingrisch, 2001 View in CoL

23. Frontal costa and vertex forming an acute angle and distinctly projected above dorsal margin of the compound eye; antennal grooves inserted below inferior margin of compound eyes. Distribution: China (Sichuan)... F. tangjiaheensis Deng , sp. nov.

- Frontal costa and vertex forming a right angle and rounded shape; antennal grooves inserted between inferior margin of compound eyes.......................................................................................24

24. Frontal costa and vertex forming a rounded shape; anterior margin of vertex arcuate; in profile, median carina of pronotum arch-like and distinct elevated before shoulders; hind pronotal process narrow and its apex narrowly rounded. Distribution: China (Sichuan)............................................................ F. guangyuanensis Deng , sp. nov.

- Frontal costa and vertex forming a right angle; anterior margin of vertex straight; in profile, median carina of pronotum arch-like and distinct elevated in the middle; hind pronotal process broad and its apex broadly arcuate. Distribution: China (Yunnan).. F. yunnanensis Zheng, 1992 View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Tetrigidae

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