Hesperentomon Price, 1960

Qian, Chang-Yuan, Bu, Yun & Luan, Yun-Xia, 2018, DNA barcoding and an updated key to the genus Hesperentomon (Protura: Acerentomata: Hesperentomidae), with a new species from Northwest China, Zootaxa 4462 (4), pp. 523-534 : 531

Key to species of genus Hesperentomon Price, 1960 (updated from Shrubovych, 2010)

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

- Foretarsus with sensillum b'-2 ............................................................................ 3

2 Accessory setae P1a and P2a present on urotergites I–VII........................................... H. macswaini

- Accessory seta P2a lacking on urotergites I–VI.................................................... H. dianicum

3 Accessory setae P1a and P2a present on nota and urotergites I–VII.............................................. 4

- Accessory setae P1a and P2a lacking on some nota and urotergites I–VII......................................... 5

4 Foretarsal sensillum b longer than c, urosternites VIII and IX with Pc- seta, mesonotum with P5a' ......... H. septemsetum

- Foretarsal sensilla b and c of equal length, urosternites VIII and IX without Pc- seta, mesonotum lacking P5a’ ...................................................................................................... H. martynovae

5 Seta P2a lacking on nota II–III........................................................................... 6

- Seta P2a present on nota II–III........................................................................... 7

6 Meso- and metasternum with 4 and 6 A -setae, respectively, mesonotum lacking P5a’ .................... H. monlunicum

- Meso- and metasternum with 6 and 8 A -setae, respectively, mesonotum with P5a' .................... H. pectigastrulum

7 Seta P1a present on nota, P2a lacking on urotergite I......................................................... 8

- Seta P1a lacking on nota and urotergites I–VI............................................................... 9

8 Tergite X with 10 or 12 setae........................................................................... 10

- Tergite X with 14 setae................................................................................ 11

9 Seta P2a present on urotergite VII....................................................................... 13

- Seta P2a lacking on urotergite VII....................................................................... 16

10 Foretarsal sensillum c short, half the length of b, urotergite X with 10 setae, seta P2a present on urotergite II–VI.................................................................................................. H. guiyangense

- Foretarsal sensillum c as length as b, urotergite X with 12 setae, seta P2a lacking on urotergite II–VI....... H. chinghaiense

11 Sensilla b and c of equal length, mesonotum lacking P5a' .............................................. H. kuratai

- Foretarsal sensillum c longer than b, mesonotum with P5a' ................................................... 12

12 Seta P1a present on urotergites I–VI, P2a present on urotergites II–VII, Pc present on urosternites IV–VI, meso- and metasternum with 6 and 8 A -setae, respectively.......................................................... H. fopingense

- Seta P1a absent on urotergites I–VI, P2a lacking on urotegites II–VII, Pc absent on urosternites IV–VI, meso- and metasternum with 4 and 6 A -setae, respectively............................................................. H. bolense

13 Seta P2a present on urotergites II –VI........................................................ H. kangdingense

- Seta P2a lacking on urotergites II–VI.................................................................... 14

14 Urosternites IV–VI with 8 P -setae, meso- and metasternum with 4 and 6 A -setae, respectively........................ 15

- Urosternites IV–VI with 9 P -setae, meso- and metasternum with 6 and 8 A -setae, respectively.............. H. dunhuaense

15 Sensilla b and c of equal length, urotergite X with 8 setae.......................................... H. nanshanensis

- Sensillum b clearly longer than c, urotergite X with 10 setae.......................................... H. xiningense

16 Urotergite X with 10 setae.............................................................................. 17

- Urotergite X with 12 setae.............................................................................. 19

17 Urosternite II–III with 5 P -setae......................................................................... 18

- Urosternites II–III with 3 P -setae (other urotergites I, IV–VI and X also with fewer P -setae, 2, 6 and 4 respectively)................................................................................................ H. sichuanensis

18 Urosternites IV–VI with 9 P -setae, meso- and metasternum with 4 and 6 A -setae, respectively............. H. huashanensis

- Urosternites IV–VI with 8 P -setae, meso- and metasternum with 6 and 8 A -setae, respectively, mesonotum with P5a' ..................................................................................................... H.yangi

19 Sensilla b and c of equal length, seta P2a present on urotergites I, meso- and metasternum with 4 and 6 A -setae, respectively......................................................................................... H. tianshanicum

- Sensillum b shorter than c, seta P2a absent on urotergites I, meso- and metasternum with 6 and 8 A -setae, respectively.............................................................................................. H. liaoningensis