Bisetocreagris, Curcic, 1983

Feng, Zegang, Zhang, Feng & Chen, Jun, 2023, Cave-dwelling Neobisiidae in South China Karst, with descriptions of twelve new species of Bisetocreagris (Pseudoscorpiones, Neobisiidae) from Guizhou Province, Zootaxa 5395 (1), pp. 1-77 : 73-75

Key to the cave-dwelling species of Bisetocreagris of China

1 Pedicel of pedipalpal patella much shorter (about one third or one fourth of patella length)........................... 2

- Pedicel of pedipalpal patella much longer (about half or more than half of patella length)............................ 8

2 Chelal finger significantly shorter than hand with pedicel.................................. B. titania ( Mahnert, 2003)

- Chelal finger significantly longer than hand with pedicel...................................................... 3

3 Carapace without eyes or eyespots........................................................................ 4

- Carapace with 2 eyes or eyespots......................................................................... 7

4 Rallum with 7 pinnate blades; femur length more than 4.90 ( ♀) mm, patella length more than 5.30 ( ♀) mm........................................................................................ B. gracilenta Gao et Zhang, 2017

- Rallum with 8–11 pinnate blades; femur length less than 4.00 ( ♂, ♀) mm, patella length less than 4.00 ( ♂, ♀) mm........ 5

5 Rallum with 11 pinnate blades; movable finger more than 3.30 ( ♂, ♀) mm...................... B. longidigitata sp. nov.

- Rallum with 8–9 pinnate blades; movable finger less than 2.30 ( ♂, ♀) mm........................................ 6

6 Pedipalpal femur 7.5 (tritonymph) times longer than wide, patella 7.0 (tritonymph) times longer than wide, chela with pedicel 8.65 (tritonymph) times longer than wide.............................................. B. scaura ( Mahnert, 2003)

- Pedipalpal femur 8.14‒8.81 ( ♂, ♀) times longer than wide, patella 6.84–7.40 ( ♂, ♀) times longer than wide, chela with pedicel 7.13‒8.02 ( ♂, ♀) times longer than wide...................................................... B. brevis sp. nov.

7 Pedipalp without granulation; pedipalpal femur 8.6‒9.0 ( ♂, ♀) times longer than wide, patella 9.1‒9.6 ( ♂, ♀) times longer than wide..................................................................... B. juanxuae Mahnert and Li, 2016

- Pedipalp with granulation present on chelal hand; pedipalpal femur 7.14‒8.25 times longer than wide, patella 6.60‒7.72 times longer than wide........................................................................ B. grandis sp. nov.

8 Pedicel of pedipalpal patella obviously more than half the entire length of patella................... B. changbing sp. nov.

- Pedicel of pedipalpal patella about half the entire length of patella............................................... 9

9 Carapace without eyes or eyespots....................................................................... 10

- Carapace with eyes or eyespots......................................................................... 13

10 Carapace with granulation present on lateral margin, pedipalp with obvious granular in all segments except chelal finger middle to the fingertip.......................................................................... B. aspera sp. nov.

- Carapace without granulation, pedipalp patella without granulation............................................. 11

11 Pedipalpal femur more than 7.00 ( ♂, ♀) times longer than wide, patella more than 6.00 ( ♂, ♀) times longer than wide, chela with pedicel more than 7.2 ( ♂, ♀) times longer than wide.......................... B. baozinensis Mahnert et Li, 2016

- Pedipalpal femur less than 5.30 ( ♂, ♀) times longer than wide, patella less than 4.30 ( ♂, ♀) times longer than wide, chela with pedicel 4.80 ( ♂, ♀) times longer than wide................................................................ 12

12 Pedipalpal femur length 2.29 ( ♀) mm, patella length 2.28 ( ♀) mm, chela with pedicel length 3.75 ( ♀) mm................................................................................ B. maomaotou Gao, Wynne et Zhang, 2018

- Pedipalpal femur length 1.65‒1.68 ( ♂, ♀) mm, patella length 1.42‒1.44 ( ♂, ♀) mm, chela with pedicel length 2.49‒2.59 ( ♂, ♀) mm............................................................................... B yanggong sp. nov.

13 Carapace with 2 eyes or eyespots........................................................................ 14

- Carapace with 4 eyes or eyespots........................................................................ 21

14 Pedipalpal femur less than 4.90 ( ♂, ♀) times longer than wide, patella less than 3.60 ( ♂, ♀) times longer than wide................................................................................. B. chuanensis Mahnert et Li, 2016

- Pedipalpal femur more than 4.90 ( ♂, ♀) times longer than wide, patella more than 3.60 ( ♂, ♀) times longer than wide.... 15

15 Pedipalpal femur more than 6.90 ( ♂, ♀) times longer than wide, patella more than 6.00 ( ♂, ♀) times longer than wide.... 16

- Pedipalpal femur less than 6.90 ( ♂, ♀) times longer than wide, patella more than 6.00 ( ♂, ♀) times longer than wide..... 17

16 Pedipalpal patella 6.07‒6.75 ( ♂, ♀) times longer than wide, chela with pedicel 5.90‒6.71 ( ♂, ♀) times longer than wide, chelal finger with 125–143 teeth................................................................. B. sanmen sp. nov.

- Pedipalpal patella 7.84‒10.36 ( ♂, ♀) times longer than wide, chela with pedicel 8.10–8.78 ( ♂, ♀) times longer than wide, chelal finger with 163‒182 teeth.................................................... B. xiaoensis Liet Liu, 2017

17 The distance between trichobothrium sb and st longer than that of sb between b................................... 18

- The distance between trichobothrium sb and st is somewhat equal to that of sb between b........................... 19

18 Epistome rounded; pedipalp without modification, pedipalpal patella 4.69 ( ♂), 4.75 ( ♀) times longer than wide............................................................................... B. chinacavernicola ( Schawaller, 1995)

- Epistome triangular; pedipalp with scale-like sculptured, pedipalpal patella 3.93‒4.40 ( ♂), 3.89‒4.41 ( ♀) times longer than wide................................................................. B. guangshanensis Gao et Zhang, 2017

19 The distance between trichobothrium st and t significantly shorter than 1/2 of sb between b, pedipalpal femur less than 5.90 ( ♂, ♀) times longer than wide, patella less than 4.60 ( ♂, ♀) times longer than wide....................... B. xishui sp. nov.

- The distance between trichobothrium st and t significantly longer than 1/2 of sb between b, pedipalpal femur more than 6.10 ( ♂, ♀) times longer than wide, patella more than 4.80 ( ♂, ♀) times longer than wide............................... 20

20 Pedipalp with granulation present on chelal hand, trichobothrium it closer to fingertip than et, apex of coxae with 4–5 setae on each side............................................................................... B. chumi sp. nov.

- Pedipalp without granulation, trichobothrium it -et at same level near fingertip, apex of coxae with 7–8 setae on each side.......................................................................................... B. jiangi sp. nov.

21 Pedipalp with granulation present on femur and chelal hand, pedipalpal femur less than 4.30 ( ♀) times longer than wide, patella less than 2.80 ( ♀) times longer than wide, chela with pedicel less than 3.50 ( ♀) times longer than wide................................................................................................. B. martii ( Mahnert, 2003)

- Pedipalp with granulation present on chelal hand, pedipalpal femur more than 4.90 ( ♂, ♀) times longer than wide, patella more than 3.40 ( ♂, ♀) times longer than wide, chela with pedicel more than 4.00 ( ♂, ♀) times longer than wide.............. 22

22 Pedipalpal femur more than 7.00 ( ♂, ♀) times longer than wide, patella more than 6.00 ( ♂, ♀) times longer than wide, chela with pedicel more than 6.50 ( ♂, ♀) times longer than wide................................... B. tenuipalma sp. nov.

- Pedipalpal femur less than 6.00 ( ♂, ♀) times longer than wide, patella less than 5.00 ( ♂, ♀) times longer than wide, chela with pedicel less than 5.50 ( ♂, ♀) times longer than wide........................................................ 23

23 Pedipalpal femur more than 5.82–5.83 ( ♂, ♀) times longer than wide, patella more than 4.34–4.67 ( ♂, ♀) times longer than wide, chela without pedicel more than 4.91–5.05 ( ♂, ♀) times longer than wide......... B. cavernarum Mahnert et Li, 2016

- Pedipalpal femur more than 5.08 ( ♀) times longer than wide, patella more than 3.63 ( ♀) times longer than wide, chela without pedicel more than 3.65 ( ♀) times longer than wide.............................................. B. ampla sp. nov.