Stenochrus CHAMBERLIN, 1922

Monjaraz-Ruedas, Rodrigo, Prendini, Lorenzo & Francke, Oscar F., 2019, Systematics Of The Short-Tailed Whipscorpion Genus Stenochrus Chamberlin, 1922 (Schizomida: Hubbardiidae), With Descriptions Of Six New Genera And Five New Species, Bulletin of the American Museum of Natural History 2019 (435), pp. 1-93 : 88-89

Stenochrus CHAMBERLIN, 1922 ,

AND RELATED GENERA ( SCHIZOMIDA : HUBBARDIIDAE )

Characters optimized with ACCTRAN, except where indicated otherwise.

Chelicerae

0. Fixed finger, prolateral surface, G3 setae position: seta G3-4 posterior (0); setae G3-2 and G3-4 posterior (1); seta G3-3 anterior (2). [DELTRAN]

1. Fixed finger, prolateral surface, number of G5 setae: ≤ 8 (1); ≥ 9 (2).

2. Movable finger, mesal surface, margin: smooth (0); lamella (1); dentate (2). [DELTRAN]

Prosomal propeltidium

3. Anterior process setation: 1+1 (0); 2+1 (1). 4. Dorsal pairs of setae, number: 2 (0); 3 (1); 4 (2).

Prosomal metapeltidium

5. Metapeltidium: divided (0); entire (1).

Opisthosoma

6. Segments X−XII (♂): not elongate (0); elongate (1).

7. Segment XII, posterodorsal process (♂): absent (0); present (1).

8. Tergite II, number of setae: 2 (0);> 2 (1).

Pedipalps

9. Pedipalps, development (♂): homeomorphic (0); elongated (1); robust (2).

Pedipalp trochanter

10. Apical process: acute (0); acuminate (1); obtuse (2); bump (3); fan-shaped (4); digitiform (5); rounded (6).

Pedipalp femur

11. Retrolateral surface, seta Fe 1, type: acuminate (0); spiniform (1); macrosetae (2).

12. Retrolateral surface, seta Fe 5, type: acuminate (0); spiniform (1); spiniform setiferous tubercle (2); macrosetae (3).

13. Retrolateral surface, seta Fv 1, type: acuminate (0); spiniform (1); spiniform setiferous tubercle (2); macrosetae (3).

14. Retrolateral surface, seta Fv 2, type: acuminate (0); spiniform (1); spiniform setiferous tubercle (2); macrosetae (3).

15. Retrolateral surface, spiniform setiferous tubercles, position: Fv 1 and Fv 2 distal (0); Fv 1 ventral, Fv 2 distal (1); Fv 1 and Fv 2 ventral (2). [DELTRAN]

16. Prolateral surface, anterior margin, apophysis: absent (0); present (1).

17. Prolateral surface, ventral row of setae (Fmv 1−4), number: 3 (0); 4 (1).

Pedipalp patella

18. Curvature: slight (0); marked (1); none (2).

19. Retrolateral row of setae (Pe), count: 3 (0); 4 (1); 5 (2); 2 (3).

20. Retrolateral row of setae (Pe), type: acuminate (0); feathered (1); spiniform (2); macrosetae (3).

21. Prolateral row of setae (Pm), count: 3 (0); 4 (1); 5 (2); 6 (3).

22. Prolateral row of setae (Pm), type: acuminate (0); feathered (1); spiniform (2); macrosetae (3).

Pedipalp tibia

23. Spurs: absent (0); ventral (1); proventral (2).

24. Retrolateral row of setae (Ter), count: 3 (0); 4 (1); 5 (2); 6 (3).

25. Retrolateral row of setae (Ter), type: (0) acuminate (0); feathered (1); spiniform (2); macrosetae (3).

26. Medial row of setae (Tmr), count: 3 (0); 4 (1); 5 (2); 6 (3).

27. Medial row of setae (Tmr), type: acuminate (0); feathered (1); spiniform (2); macrosetae (3).

28. Prolateral row of setae (Tir), count: 3 (0); 4 (1); 5 (2); 6 (3).

29. Prolateral row of setae (Tir), type: acuminate (0); feathered (1); spiniform (2); macrosetae (3).

Male flagellum

30. Shape, dorsal view: lanceolate (0); cordate (1); spatulate (2); subrhomboidal (3); shovel shaped (4); elliptical (5); trilobed (6); bulbous or clavate (7); spear shaped (8); deltoid (9). [DELTRAN]

31. Shape, lateral view: slender (flat) (0); elliptical (1); bulbous (2).

32. Dorsal depressions: absent (0); pair of pits (1); single depression (2); pair of depressions (3); depression and pits (4).

33. Dorsal depressions, position: medial (0); submedial (1); anterior (2); posterior (3).

34. Dorsal projections: flat (0); pair of projections (1); single projection (2).

35. Dorsal projections, position: medial (0); submedial (1). [DELTRAN]

36. Seta Dm 1, position with respect to anterior margin: posterior (0); aligned with margin (1).

37. Seta Dm 4, position with respect to seta Dl 3: anterior to (0); aligned with (1).

38. Setae Dl 1, position with respect to setae Vl 1: aligned with (0); posterior to (1); anterior to (2).

39. Setae Dl 3, position with respect to setae Vl 2: aligned with (0); posterior to (1); anterior to (2).

40. Seta Vm 1, position with respect to setae Vm 2: aligned with (0); posterior to (1); anterior to (2).

Spermathecae

44. Lobes, number of pairs: 1 (0); 2 (1); 3 or more (2).

45. Median lobes, shape: linear (0); arch shaped (1); inverse J-shaped (2).

46. Median lobes, ornamentation: sclerotized (0); bulbs (1); smooth (2).

47. Median lobes, sclerotization: apically (0); half of lobe (1); entire lobe (3).

48. Median lobes, bulbs size: large (0); small (1).

49. Median lobes, apex orientation: ental (0); ectal (1); vertical (2).

50. Median lobes, base position relative to bases of lateral lobes: aligned with (0); anterior to (1); posterior to (2).

51. Lateral lobes, shape: linear (0); arch shaped (1).

52. Lateral lobes, ornamentation: sclerotized (0); smooth (1).

53. Lateral lobes, apex orientation: ental (0); ectal (1); vertical (2).

54. Lateral lobes, length compared with median lobes: equal (0); 3/4 (1); 1/2 (2); 1/4 (3).

55. Lobes, relative widths: equal (0); lateral lobes wider than median lobes (1); median lobes wider than lateral lobes (2).

56. Lobes, symmetry: symmetric (0); asymmetric (1).

57. Chitinized arch, shape: arrow shaped (0); mug shaped (1); V-shaped (2); hastate (3); bowl shaped (4); inverse arc (5); obtuse triangle (6); U-shaped (7).

58. Chitinized arch, anterior branch: present (0); absent (1).

59. Chitinized arch, lateral tip shape: pointed (0); lobed (1); widened (2).

60. Gonopod: absent (0); present (1)

Female flagellum

41. Flagellomeres, count: 3 (0); 4 (1).

42. Setae Dl 1, position with respect to setae Vl 1: aligned with (0); posterior to (1); anterior to (2).

43. Setae Dl 3, position with respect to setae Vl 2: aligned with (0); posterior to (1); anterior to (2).