Systolederus Bolivar, 1887

Deng, Wei-An, Lu, Xiang-Yi, Zhao, Cong-Lin & Wu, Fei-Peng, 2019, A review of the genus Systolederus Bolivar (Orthoptera: Metrodorinae) from China, Zootaxa 4585 (3), pp. 489-500 : 490-491

publication ID

https://doi.org/ 10.11646/zootaxa.4585.3.5

publication LSID

lsid:zoobank.org:pub:60880E99-A55D-4F25-82D8-C57DDC03977E

DOI

https://doi.org/10.5281/zenodo.5935340

persistent identifier

https://treatment.plazi.org/id/856DFA57-FFF5-8E7A-10B2-FB863EAEFCB2

treatment provided by

Plazi

scientific name

Systolederus Bolivar
status

 

Key to the Chinese Species of Systolederus Bolivar View in CoL

Modified from Zheng (2013)

1. Outer side and inner side of hind tibia without spine............................. Systolederus aspinus Deng View in CoL , sp. nov.

- Outer side and inner side of hind tibia with several spines...................................................... 2

2. Pronotum short, not reaching, reaching or just surpassing the apex of hind femora.................................. 3

- Pronotum elongate, extending far beyond the apex of hind femora...............................................4

3. Anterior margin of vertex straight in dorsal view; hind wings reaching apex of hind femora................................................................................................... Systolederus nigritibia Zheng, 2005 View in CoL

- Anterior margin of vertex acute in dorsal view; hind wings reaching middle of hind tibia............................................................................................. Systolederus brachynotus Zheng & Ou, 2010 View in CoL

4. Upper margin of pronotum undulating or undulating before shoulders in profile.................................... 5

- Upper margin of pronotum straight in profile................................................................ 6

5. With a pair of abbreviated carinae between shoulders; upper margin of pronotum undulating before shoulders in profile; width of midfemur 2.3 times width of tegmina.................................... Systolederus guangxiensis Zheng, 1998 View in CoL

- Without abbreviated carinae between shoulders; upper margin of pronotum undulating in profile; width of midfemur equal to width of tegmina......................................................... Systolederus emeiensis Zheng, 1998 View in CoL

6. Antenna inserted between lower margins of eyes............................................................. 7

- Antenna inserted below lower margins of eyes.............................................................. 10

7. Head distinctly exerted above upper level of pronotum; posterior process of pronotum reaching apex of hind tibia............................................................................. Systolederus oculatus Zheng & Ou, 2012 View in CoL

- Head slightly exerted above upper level of pronotum; posterior process of pronotum reaching one third to middle of hind tibia.................................................................................................... 8

8. Length of first segment of hind tarsi longer than third, first and second pulvillus small, third pulvillus large......................................................................................... ‘ Systolederus choui Liang, 2012 View in CoL

- First and third segment of hind tarsi equal in length; three pulvilli equal in length...................................9

9. Posterior process of pronotum reaching one third of hind tibia; humeral angle nearly rounded; width of midfemur wider than width of tegmina........................................................ Systolederus fujianensis Zheng, 1993 View in CoL

- Posterior process of pronotum reaching behind middle of hind tibia; humeral angle obtuse; width of midfemur equal to width of tegmina............................................................ .. Systolederus longinota Zheng, 2005a View in CoL

10. Humeral angle nearly rounded; apex of tegmina acute; width of midfemur equal to width of tegmina.................................................................................. Systolederus spicupennis Zheng & Jiang, 2003 View in CoL

- Humeral angle obtuse; apex of tegmina narrowly rounded or rounded; width of midfemur wider than or narrower than width of tegmina............................................................................................ 11

11. Posterior process of pronotum reaching apex of hind tibia............. Systolederus longipennis Zheng, Jiang &Liu, 2005 View in CoL

- Posterior process of pronotum reaching middle to two-thirds of hind tibia........................................12

12. Width of midfemur equal to width of tegmina; posterior process of pronotum reaching two- thirds of hind tibia; outer part lower side of hind femur yellow brown............................. Systolederus heishidingensi s Zheng & Xie, 2004

- Width of midfemur distinctly wider than width of tegmina; posterior process of pronotum reaching middle of hind tibia; outer part lower side of hind femur black...................................................................... 13

13. Apex of tegmina broadly rounded; lower margins of midfemora undulated.......... Systolederus orthonotus Zheng, 1998 View in CoL

- Apex of tegmina narrowly rounded; lower margins of midfemora straight........................................ 14

14. Lateral ocelli placed on middle of anterior margins of eyes; with a pair of abbreviated carinae between shoulders; width of midfemur equal to width of tegmina in male................................. Systolederus hunanensis Zheng, 2013 View in CoL

- Lateral ocelli placed on below middle of anterior margins of eyes; without abbreviated carinae between shoulders; width of midfemur wider than width of tegmina in male............................................................. 15

15. Width of longitudinal furrow of frontal ridge equal to width of first antennal segment; hind wings reaching apex of posterior process of pronotum; width of midfemur equal to width of tegmina in female.................................................................................................... Systolederus guizhouensis Deng & Zheng, 2013 View in CoL

- Width of longitudinal furrow of frontal ridge narrower than width of first antennal segment; hind wings surpassing apex of posterior process of pronotum; width of midfemur wider than width of tegmina in female..................................................................................... Systolederus guposhanensis Deng, Zheng & Wei, 2007 View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Tetrigidae

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