Hesperentomon Price, 1960

Shrubovych, Julia, 2010, Redescription of Hesperentomon tianshanicum Martynova, 1970 (Protura: Acerentomata, Hesperentomidae) and key to Hesperentomon species, Zootaxa 2720, pp. 28-34 : 33

Key to species of genus Hesperentomon Price, 1960

1. Foretarsus lacking sensillum b'2 .................................................................................................................................. 2

- Foretarsus with sensillum b'2 ...................................................................................................................................... 4

2. Accessory setae P1a and P2a present on tergites I–VII, meso- and metasternum with A1 seta .............. H. macswaini

- Accessory seta P2a lacking on tergites II–VI, meso- and metasternum without A1 seta............................................ 3

3. Foretarsal sensilla b and c of nearly equal length, sensilla t3 and a’ shorter than other sensilla ......... H. chinghaiense

- Sensillum c short, half the length of b, sensilla t3 and a’ same length as a and d ..................................... H. dianicum

4. Accessory setae P1a and P2a present on nota and tergites I–VII ................................................................................ 5

- Some accessory setae P1a and P2a lacking on nota and tergites I–VII ...................................................................... 6

5. Foretrasal sensillum b longer than c, sternites VIII and IX with Pc- seta, mesonotum with P5a- seta .. H. septemsetum

- Sensilla b and c of equal length, sternites VIII and IX without Pc- seta, mesonotum lacking P5a- seta. H. martynovae

6. Seta P2a lacking on nota ............................................................................................................................................. 7

- Seta P2a present on nota.............................................................................................................................................. 8

7. Meso- and metasternum with 4 and 6 A -setae, respectively .................................................................. H. monlunicum

- Meso- and metasternum with 6 and 8 A -setae, respectively .............................................................. H. pectigastrulum

8. Seta P1a present on nota, P2a lacking on tergite I ...................................................................................................... 9

- Seta P1a lacking on nota and tergites I–VI ................................................................................................................ 10

9. Foretarsal sensillum c short, half the length of b, tergite X with 10 setae, meso- and metasternum without A1 seta.... ............................................................................................................................................................... H. guiyangense

- Sensilla b and c of equal length, tergite X with 14 setae, meso- and metasternum with A1 seta .................. H. kuratai

10. Seta P2a present on tergite VII.................................................................................................................................. 11

- Seta P2a lacking on tergite VII.................................................................................................................................. 14

11. Seta P2a present on tergites I–VI ....................................................................................................... H. kangdingense

- Seta P2a lacking on tergites I–VI ............................................................................................................................... 12

12. Sternites IV–VI with 8 P -setae ................................................................................................................................... 13

- Sternites IV–VI with 9 P -setae ..............................................................................................................................H. sp.

13. Sensilla b and c equal length, tergite X with 8 setae ........................................................................... H. nanshanensis

- Sensillum b evidently longer than c, tergite X with 10 setae ................................................................... H. xiningense

14. Tergite X with 10 setae ............................................................................................................................................... 15

- Tergita X with 12 setae .............................................................................................................................................. 16

15. Sternite I with 4 P -setae, II–III with 5 P -setae, IV–VI with 9 P -setae and sternite X with 6 setae .... H. hwashanense

- Sternites I–VI and X with fewer number of P -setae (2, 3, 6, 4 respectively) ......................................... H. sichuanense

16. Meso- and metasternum without A1 seta, sensillum t3 longer than b and c ........................................ H. tianshanicum

- Meso- and metasternum with A1 seta, sensillum t3 shorter than b and c ............................................ H. liaoningensis