Identification key to species of Pseudonannolene

1. Head, trunk, and legs pigmented (non-troglomorphic species) (Fig. 17) ......................................... 4

– Head, trunk, and legs depigmented (troglomorphic species) (Fig. 18E) .......................................... 2

2. Solenomere not rounded, without a squamous membrane covering seminal apophysis (Figs 47D, 86D) .................................................................................................................................................. 3

– Solenomere rounded, with a squamous membrane covering seminal apophysis (Fig. 128D–F) ....... ...................................................................................................... P. spelaea Iniesta & Ferreira, 2013

3. Solenomere square-shaped (Fig. 86D) ........................................... P. lundi Iniesta & Ferreira, 2015

– Solenomere subtriangular (Fig. 47D) .................................. P. ambuatinga Iniesta & Ferreira, 2013

4. Telopodite straight, not curved mesally (Figs 35, 36A, C) ............................................................... 8

– Telopodite strongly curved mesally (Figs 67D, 94D, 150D, 152D) ................................................. 5

5. First leg-pair of males with subcylindrical prefemoral process (Figs 94B, 150B, 152B) ................ 6

– First leg-pair of males with large and hexagonal-shaped prefemoral process (Fig. 67B) .................. ........................................................................................................ P. erikae Iniesta & Ferreira, 2014

6. Trunk of telopodite not laterad projected (Figs 150D, 152D) .......................................................... 7

– Trunk of telopodite larger and laterad projected (Fig. 94D) ....................... P. mesai Fontanetti, 2000

7. Gnathochilarium with paired projections in the proximal region of the mentum (Figs 174B, 197E in Supp. file 4) ...................................................................................................... P. bucculenta sp. nov.

– Gnathochilarium without paired projections in the mentum (Fig. 175C) ............. P. curvata sp. nov.

8. Solenomere without ectal process (Fig. 35C, E) or with ectal process, but not directed horizontally (Fig. 35A) ....................................................................................................................................... 13

– Solenomere with ectal process directed horizontally (Figs 49D–F, 52E, 61, 75D–F, 144D–F) ....... 9

9. First leg-pair of males with prefemoral process (Figs 52A–B, 75A–B, 144A–B) ......................... 10

– First leg-pair of males without prefemoral process (Fig. 49A–B) ... P. anapophysis Fontanetti, 1996

10. Internal branch subtriangular or shovel-shaped, not curved apically (Figs 52E, 61, 144D–F) .......11

– Internal branch S-shaped, swollen, and curved apically (Fig. 75D–F) ..... P. inops Brölemann, 1929

11. Telopodite as wide as half of gonocoxa in width (Figs 52E, 61) .................................................... 12

– Telopodite larger than half of gonocoxa in width (Fig. 144D–F) ....................................................... ....................................................................................................... P. xavieri Iniesta & Ferreira, 2014

12. Telopodite not swollen basally (Fig. 52E) ...................................................... P. bovei Silvestri, 1895

– Telopodite swollen basally (Fig. 61) .................................................... P. caulleryi Brölemann, 1929

13. Telopodite short, less than half of gonocoxa .................................................................................. 16

– Telopodite elongated, longer than half of gonocoxa (Figs 45D–F, 116C–D, 119B–D) ................. 14

14. Internal branch short and enfolding the telopodite basally (Figs 45D, 116C–D) ........................... 15

– Internal branch elongated and positioned parallel to the telopodite (Fig. 119D) ............................... ................................................................................................................ P. scalaris Brölemann, 1902

15. Solenomere short and projected laterally (Fig. 116C–D) ............................ P. rocana Silvestri, 1902

– Solenomere subtriangular, not projected laterally (Fig. 45D–F) ............ P. alegrensis Silvestri, 1897

16. Penis rounded, not extended basally (Figs 47C, 49C, 55C) ........................................................... 22

– Penis suboval, extended basally (Figs 31C, 42C, 71C, 90C, 107D, 122C, 156C) ......................... 17

17. Internal branch subtriangular, narrow (Figs 42D, 71D, 108C, 122C) ............................................ 19

– Internal branch shovel-shaped, rounded apically (Fig. 90D, 156D) ............................................... 18

18. Solenomere with squamous region not expanded laterally, seminal apophysis thickened apically (Fig. 90D) ............................................................................................... P. maritima Schubart, 1949

– Solenomere with squamous region expanded laterally, folded apically, seminal apophysis not thickened apically (Fig. 156D) ............................................................................ P. insularis sp. nov.

19. Solenomere without ectal process (Figs 71D, 108D, 122D) .......................................................... 20

– Solenomere with rounded ectal process (Fig. 42D) .............................. P. albiventris Schubart, 1952

20. Gonocoxa elongated, almost twice as long as telopodite (Figs 71E–F, 122E–F) ........................... 21

– Gonocoxa short, subtriangular (Fig. 108D) ...................................... P. patagonica Brölemann, 1902

21. Solenomere rounded (Fig. 122D) .................................................... P. sebastianus Brölemann, 1902

– Solenomere subtriangular, not rounded apically (Fig. 71D) ................... P. halophila Schubart, 1949

22. Head only with supralabral and labral setae (Supp. file 4: Fig. 194A) ........................................... 24

– Frontal region of the head densely setose, overlapping the supralabral and labral setae (Supp. file 4: Fig. 194B) ....................................................................................................................................... 23

23. Solenomere with seminal apophysis located mesally (Fig. 63D) ............. P. centralis Silvestri, 1902

– Solenomere with seminal apophysis located ectally (Fig. 99D) ......... P. occidentalis Schubart, 1958

24. Gnathochilarium of males without long setae scattered on the mentum and stipes (Supp. file 4: Fig. 199A–B) .................................................................................................................................. 26

– Gnathochilarium of males with long setae scattered on the mentum and stipes (Supp. file 4: Fig. 197F) ....................................................................................................................................... 25

25. Coxae of the first leg-pair of males with a constriction at about midlength (Fig. 158A–B) .............. ............................................................................................................................... P. morettii sp. nov.

– Coxae of the first leg-pair of males without a constriction (Fig. 104A–B) ........................................ ..................................................................................................................... P. parvula Silvestri, 1902

26. Body rings with metazonites smooth, not granulated (Fig. 26A) ................................................... 28

– Body rings with metazonites granulated (Fig. 26B) ....................................................................... 27

27. Gnathochilarium of males without proximal projections bearing setae on the stipes (Fig. 167D) .... ............................................................................................................. P. buhrnheimi Schubart, 1960

– Gnathochilarium of males with proximal projections bearing setae on the stipes (Supp. file 4: Figs 175A, 198B) ............................................................................................... P. granulata sp. nov.

28. Solenomere without medial process (Fig. 36A–C) ......................................................................... 29

– Solenomere with medial process (Fig. 160D–F) ................................................... P. nicolau sp. nov.

29. Telopodite without a large projection (Fig. 36A–C) ....................................................................... 30

– Telopodite with a large and rounded projection (Fig. 146D) ..................................... P. alata sp. nov.

30. Adults with more than 15 ommatidia (Fig.19D) ............................................................................ 31

– Adults with less than 15 ommatidia (Fig. 81A) ................................... P. leucomelas Schubart, 1947

31. Gonocoxae not largely subcylindrical, without a large shoulder (Fig. 36A) .................................. 33

– Gonocoxae largely subcylindrical, with a large shoulder (Figs 84E–F, 135E–F) .......................... 32

32. Internal branch shovel-shaped, slightly curved ectad at midlength in anal view (Fig. 135D) ........... ................................................................................................................. P. tricolor Brölemann, 1902

– Internal branch subtriangular, not excavated at midlength in anal view (Fig. 84D–E) ...................... ................................................................................................................. P. longicornis (Porat, 1888)

33. Gnathochilarium of males without glabrous projections on the stipes (Fig. 19E) ......................... 34

– Gnathochilarium of males with glabrous projections located proximally on the stipes (Fig. 168D). .............................................................................................................. P. callipyge Brölemann, 1902

34. Internal branch without torsion of 180° in anal view ..................................................................... 36

– Internal branch with torsion of 180° in anal view .......................................................................... 35

35. Torsion of the internal branch starting only apically, with distal projection directed horizontally (Fig. 69D) ............................................................................ P. fontanettiae Iniesta & Ferreira, 2014

– Torsion of the internal branch starting at midlength, enlarged apically, with distal projection directed diagonally upwards (Fig. 114D) .................................................. P. robsoni Iniesta & Ferreira, 2014

36. Solenomere with ectal process (Fig. 35A) ...................................................................................... 40

– Solenomere without ectal process (Fig. 35C, E) ............................................................................ 37

37. Telopodite and internal branch elongated (Figs 79D, 88D, 112D) ................................................. 38

– Telopodite and internal branch short, less than ⅓ of gonocoxa in length) (Fig. 141D–F) ................. ...................................................................................................................... P. urbica Schubart, 1945

38. Coxae of the first leg-pair of males with constriction at about midlength (Figs 79A, 112A) ........ 39

– Coxae of the first leg-pair of males without constriction at about midlength (Fig. 88A) ................... .............................................................................................. P. magna Udulutsch & Pietrobon, 2003

39. First leg-pair of males with prefemoral process wide, about half the width of prefemur (Fig. 79B). ......................................................................................................... P. leucocephalus Schubart, 1944

– First leg-pair of males with prefemoral process short, less than half of prefemur (Fig. 112B) .......... ...................................................................................................................... P. pusilla Silvestri, 1895

40. Solenomere with ectal process subtriangular (Figs 35A, 36A–C) ................................................. 42

– Solenomere with ectal process spiniform (Figs 110D, 148D) ........................................................ 41

41. Internal branch shovel-shaped, with horizontal plate (Fig. 110D–F) .... P. paulista Brölemann, 1902

– Internal branch subtriangular, without horizontal plate (Fig. 148D–F) .................... P. aurea sp. nov.

42. Internal branch subtriangular (Fig. 35A) ........................................................................................ 47

– Internal branch shovel-shaped (Figs 50E, 102D, 130D, 131C, 133D) ........................................... 43

43. Solenomere with ectal process rounded (Figs 102D, 133D) or inconspicuous (Fig. 131C) .......... 45

– Solenomere with ectal process subtriangular (Figs 50E, 130D) ..................................................... 44

44. Gonocoxae subrectangular (Fig. 50E) .......................................................... P. borelli Silvestri, 1895

– Gonocoxae subtriangular, basally expanded and progressively less wide (Fig. 130D–F) ................. ..................................................................................................................... P. strinatii Mauriès, 1974

45. Internal branch with a horizontal plate basally (Figs 102D, 133D) ............................................... 46

– Internal branch without a horizontal plate basally (Fig. 131D) ............... P. sulcatula Silvestri, 1895

46. Solenomere with seminal apophysis long, thickened apically (Fig. 102D, F) ................................... ................................................................................................................. P. ophiiulus Schubart, 1944

– Solenomere with seminal apophysis short, not thickened apically (Fig. 133D, F) ............................ .............................................................................................................. P. tocaiensis Fontanetti, 1996

47. Solenomere with ectal process short or as long as apicomesal process (Figs 35A, 36A–C) ......... 48

– Solenomere with ectal process exceeding in length the rounded apicomesal process (Fig. 118D) .... ................................................................................................. P. rolamossa Iniesta & Ferreira, 2013

48. Solenomere with apicomesal and ectal processes visible apically (Figs 35A, 36A–C) ................. 49

– Solenomere with apicomesal and ectal processes short, almost not visible apically (Fig. 126D) ..... .................................................................................................................. P. silvestris Schubart, 1944

49. Internal branch without a rounded projection directed ectad (Figs 77F, 92D, 96F, 124F) ............. 53

– Internal branch with a rounded projection directed ectad (Figs 57F, 65F, 73F, 137D–F) .............. 50

50. Body color brownish grey (Figs 56, 64, 136) ................................................................................. 51

– Body with head and trunk light ocher color (Fig. 72) ........................ P. imbirensis Fontanetti, 1996

51. Penis rounded, subelliptical (Figs 57C, 137C) ............................................................................... 52

– Penis circle-shaped (Fig. 65C) .................................................................. P. curtipes Schubart, 1960

52. Internal branch with a short torsion apically (Fig. 137D) ............................ P. typica Silvestri, 1895

– Internal branch without a torsion apically (Fig. 57D) ............... P. caatinga Iniesta & Ferreira, 2014

53. Internal branch narrow, but not foliaceus (Figs 77F, 92D, 96F) ..................................................... 54

– Internal branch foliaceus (Fig. 124F) ................................................... P. segmentata Silvestri, 1895

54. Internal branch not curved ectad (Fig. 77F, 92D) ........................................................................... 55

– Internal branch curved ectad (Fig. 96F) ........................................... P. microzoporus Mauriès, 1987

55. Gonocoxae subrectangular (Fig. 77E–F) .................................. P. leopoldoi Iniesta & Ferreira, 2014

– Gonocoxae subtriangular, basally expanded and progressively less wide (Fig. 92C–D) ................... ............................................................................................................. P. meridionalis Silvestri, 1902