KEY TO SPECIES OF PREDATOROONOPS

1. Males.......................... 2

– Females (unknown in P. phillips)...... 18

2. Chelicerae with one or two frontal furrows...3

– Chelicerae without frontal furrow...... 13

3. Chelicerae with median furrow absent and distal dorsally curved apophysis (fig. 23)................................. P. vallarta

– Chelicerae with median furrow present.... 4

4. Chelicerae with subdistal furrow inconspicuous, presenting a group of setae (fig. 22)................................ P. dillon

– Chelicerae with well-developed subdistal furrow (figs. 13–21).................. 5

5. Chelicerae with distal dorsally curved apophysis (fig. 13)..................... 6

– Chelicerae without distal dorsally curved apophysis....................... 9

6. Chelicerae with distal dorsally curved apophysis long........................ 7

– Chelicerae with distal dorsally curved apophysis short (fig. 14)........... P. poncho

7. Chelicerae with long median furrow, occupying almost all anterior surface (fig. 16)... P. valverde

– Chelicerae with shorter median furrow occupying half of anterior surface (figs. 13, 15).... 8

8. Chelicerae with distal apophysis narrow, without apophysis on the basal condyle (fig. 13)............ P. schwarzeneggeri

– Chelicerae with distal apophysis wide, with apophysis on the basal condyle (fig. 15).............................. P. billy

9. Chelicerae with apophysis on basal condyle (figs. 18–21)..................... 10

– Chelicerae without apophysis on the basal condyle (fig.17)............... P. blain

10. Clypeus two times longer than diameter of the OMA; median furrow very small (fig. 20)............... P. rickhawkins

– Clypeus as long as diameter of OMA; median furrow conspicuous (fig. 18).......... 11

11. Chelicerae with distal apophysis elongated, very narrow and subdistal apophysis curved (fig. 19).................... P. anna

– Chelicerae with distal and subdistal apophysis short (figs. 18, 21)............... 12

12. Chelicerae with distal apophysis distally bifid, median furrow short (fig. 21).... P. dutch

– Chelicerae with distal apophysis area truncat- ed, median furrow triangular (fig. 18)........................... P. maceliot

13. Clypeus with distinct and robust needlelike setae (figs. 25, 29)................. 14

– Clypeus without robust needlelike setae (figs. 24, 26–28)................... 15

14. Subdistal apophysis curved dorsally (fig. 29)......................... P. olddemon

– Subdistal apophysis long, racket shaped at tip (fig. 25)................... P. yautja

15. Chelicerae with very large quadrate projection on the middle surface (fig. 28)............................. P. chicano

– Chelicerae without frontal projection... 16

16. Distal apophysis forming a slender sclerotized black branch with narrow tip (figs. 24, 335)..................... P. phillips

– Distal apophysis forming a slender sclerotized black branch with flattened tips (figs. 26– 27)............................ 17

17. Distal apophysis trifid on the distal area (figs. 27, 417–419)......... P. mctiernani

– Distal apophysis sinuous, sulcated at tip (figs. 26, 370–371).......... P. peterhalli

18. Anterior receptaculum larger than posterior receptaculum (figs. 64, 395).......... 19

– Anterior receptaculum smaller than or of similar size as posterior receptaculum (figs. 66, 68, 182).................. 20

19. Anterior receptaculum cordiform, apodema plate M-shaped (fig. 64)................................. P. schwarzeneggeri

– Anterior receptaculum subrectangular, apodema with coiled base (fig. 395).............................. P. peterhalli

20. Anterior and posterior receptaculum fused almost indistinguishable (figs. 397, 399)... 21

– Anterior and posterior receptaculum easily distinguishable (figs. 66, 177)......... 22

21. Receptaculum peanut shaped (fig. 399)............................ P. chicano

– Receptaculum rectangular (fig. 397).......................... P. mctiernani

22. Posterior receptaculum large, squared, with very short anterior receptaculum (figs. 278– 279)...................... P. dillon

– Posterior receptaculum not larger than the anterior receptaculum (figs. 68, 70, 282)... 23

23. Anterior receptaculum T-shaped distally (fig. 182)........................ 24

– Anterior receptaculum not T-shaped.... 26

24. Apodema process originating at the middle of the apodema plate (fig. 401)............................... P. olddemon

– Apodema process originating at the distal third of the apodema plate (figs. 182, 282)..... 25

25. Posterior receptaculum cordiform (fig. 182).................. P. rickhawkins

– Posterior receptaculum nose shaped (fig. 282)...................... P. yautja

26. Anterior receptaculum subtriangular (figs. 68, 70, 177).......................... 27

– Anterior receptaculum cylindrical (figs. 66, 179)........................... 29

27. Posterior receptaculum cylindrical, apodema plate flattened distally (figs. 68, 70)..... 28

– Posterior receptaculum globose, apodema plate coiled, slender in the distal area (fig. 177)................. P. maceliot

28. Apodema plate U-shaped, flattened, posterior receptaculum elongated distally (figs. 70– 71)..................... P. valverde

– Apodema plate narrow medially, posterior receptaculum U-shaped distally (figs. 68– 69)........................ P. billy

29. Apodema plate Z-shaped; posterior receptaculum large, rounded at tip (figs. 66–67)............................. P. poncho

– Apodema plate not Z-shaped, posterior receptaculum small, with variable tip (figs. 174, 179, 276)................ 30

30. Apodemaplate U-shaped in ventral view (figs. 174, 276, 280)................ 31

– Apodema plate long and crossed in the distal area in ventral view (fig. 179)..... P. anna

31. Posterior receptaculum with elongated distal area (figs. 174, 280)................ 32

– Posterior receptaculum not elongated in the distal area (fig. 276)........... P. dutch

32. Posterior receptaculum drop shaped; apodema plate with sinuous apodema process (figs. 280–281).............. P. vallarta

– Posterior receptaculum cylindrical, with elongated distal area, apodema plate with curved apodema process (figs. 174–176)... P. blain