Lachesilla

Manchola, Oscar Fernando Saenz, Aldrete, Alfonso Neri García & Obando, Ranulfo González, 2015, New species of Lachesilla Westwood in the pedicularia group (Psocodea: ‘ Psocoptera’: Lachesillidae) from the Colombian Amazonia, Zootaxa 3915 (4), pp. 510-520 : 511

Key to Lachesilla species of the pedicularia group in which males have one clunial apophysis

1. Females............................................................................................ 2

-. Males............................................................................................. 6

2. Subgenital plate posteriorly rounded; ninth sternum anteriorly rounded, spermapore towards anterior margin................................................................ Lachesilla cesarcardonai García Aldrete, González & Saldaña

-. Subgenital plate posteriorly bilobed; ninth sternum with a transverse pigmented area............................... 3

3. Subgenital plate and paraprocts broadly triangular; epiproct concave anteriorly; ninth sternum with broad pigmented area; spermapore small, towards anterior margin............................. Lachesilla asymmetriproctus García Aldrete

-. Subgenital plate broad, with or without a pigmented area underlying the plate...................................... 4

4. Subgenital plate extended posteriorly; gonapophyses short and slender; ninth sternum narrow; epiproct concave anteriorly; without a pigmented area underlying the subgenital plate...................... Lachesilla convexicornis García Aldrete

-. Subgenital plate with a broad, irregular pigmented area on each side of longitudinal midline ( Fig. 17 ); epiproct with or without a pigmented basal area................................................................................. 5

5. Gonapophyses large; ninth sternum almost rectangular; epiproct almost straight anteriorly, uniformly pigmented; with an irregular pigmented area on each side of longitudinal midline, underlying the subgenital plate................................................................................................. Lachesilla macropudenda García Aldrete

-. Gonapophyses large and slender; ninth sternum membranous, with two rounded, well sclerotized areas and with a narrow transverse band distally ( Fig. 18 ); epiproct rounded posteriorly and concave anteriorly ( Fig. 19 ) Lachesilla huitoto n. sp.

6. Epiproct without apophyses; clunial apophysis short and stout; phallosome apodeme stout, branching distally, “Y” shaped..................................................................... Lachesilla macropudenda Garcia Aldrete

-. Epiproct with two apophyses; phallosome apodeme “Y” or “T” shaped; claspers tips free or fused...................... 7

7. Phallosome apodeme “Y” shaped; claspers not fused distally; epiproctal apophyses almost straight and slender; clunial apophysis long, slender, apically pointed and considerably exceeding the distal margin of the epiproct.......................................................................... Lachesilla cesarcardonai García Aldrete, González & Saldaña

-. Phallosome apodeme “T” shaped; claspers tips fused; clunial apophysis not exceeding the distal margin of the epiproct or shorter.............................................................................................. 8

8. Epiproctal apophyses strongly asymmetric; clunial apophysis stout, slightly curved and obtusely concave at apex, not exceeding the distal margin of the epiproct................................... Lachesilla asymmetriproctus García Aldrete

-. Epiproctal apophyses symmetric; clunial apophysis variable................................................... 9

9. Epiproctal apophyses short, not extended or slightly extended beyond the base of the clunial apophysis................ 10

-. Epiproctal apophyses large considerably extended beyond the base of the clunial apophysis…....................... 12

10. Epiproctal apophyses forceps-like ( Fig. 4 ), slightly extended beyond the base of the clunial apophysis; clunial apophysis long, slender and widened at the apex; claspers fused distally, forming a projection slightly bifurcated at apex ( Fig. 6 )...................................................................................... Lachesilla putumayensis n. sp.

-. Epiproctal apophyses not forceps-like, short and clunial apophysis short......................................... 11

11. Epiproct bilobed, apophyses, stout, slightly curved outward; clunial apophysis broad, stout, concave distally; claspers fused distally, forming a projection slightly bifurcated at apex....................... Lachesilla convexicornis García Aldrete

-. Epiproct almost rectangular, apophyses broadly joined at base, deeply concave distally forming two acuminate arms bent outwards; clunial apophysis slender, straight at apex................................. Lachesilla williamsi García Aldrete

12. Clunial apophysis slender, wider basally, with posterior margin truncate; claspers fused distally, forming a blunt projection; epiproct bilobed, with long, acuminate apophyses.............................. Lachesilla carpinteroi García Aldrete

-. Clunial apophysis stout, broad; epiproct bilobed, with long, slender apophyses; claspers fused distally, forming a projection bifurcated or acuminate at apex........................................................................ 13

13. Claspers forming an acuminate projection; clunial apophysis almost as long as wide, with posterior margin straight; epiproctal apophyses long, curved, distally acuminate...................... Lachesilla ilama García Aldrete, González & Saldaña

-. Claspers forming a projection bifurcated at apex ( Fig. 12 ).; clunial apophysis longer than wide, with posterior margin straight ( Fig. 10 ) or slightly concave ( Fig. 22 ); epiproctal apophyses long, almost straight, curved at apex, with a short, broad spine on the inner margin of basal half ( Figs 10 , 22 ).............................................. Lachesilla huitoto n. sp.

Figures

FIGURES 13 − 19. Lachesilla huitoto n. sp. Female. 13. Forewing. 14. Hindwing. 15. Front view of head. 16. Paraproct. 17. Subgenital plate. 18. Gonapophyses and ninth sternum. 19. Epiproct. Scales in mm.

FIGURES 1 − 6. Lachesilla putumayensis n. sp. Male. 1. Forewing. 2. Hindwing. 3. Front view of head. 4. Paraprocts, epiproct and clunial apophysis. 5. Terminalia, lateral view. 6. Phallosome and claspers, ventral view. Scales in mm.

FIGURES 7 − 12. Lachesilla huitoto n. sp. Male. 7. Forewing. 8. Hindwing. 9. Front view of head. 10. Paraprocts, epiproct and clunial apophysis. 11. Terminalia, lateral view. 12. Phallosome and claspers, ventral view. Scales in mm.

FIGURES 20 − 22. Lachesilla huitoto n. sp. Male and female variations. 20. Male forewing. 21. Female forewing. 22. Male clunial apophysis and epiproct. Scales in mm.