Nicolaus Lindberg

Viraktamath, C. A. & Webb, M. D., 2014, Four new species of the grass feeding leafhopper genus Nicolaus Lindberg (Hemiptera: Cicadellidae: Deltocephalinae) from the Indian subcontinent, Zootaxa 3784 (5), pp. 528-538 : 530

Key to species of Nicolaus Lindberg from the Indian subcontinent

1. Vertex of head with anterior submarginal brown stripe between eyes ( Figs 1, 3 , 9, 21)............................... 2

- Vertex of head without submarginal brown stripe between eyes, may have brown patches ( Figs 5 , 41 )... N. cornutus sp. nov.

2. Aedeagal shaft anteriorly sclerotized medially ( Figs 35 , 56 ); apophysis of style slender, without toothed pigmented border ( Figs 34 , 53 )......................................................................................... 3

- Aedeagal shaft membranous ( Figs 17 , 25 ); apophysis of style stouter with toothed pigmented border ( Figs15 , 23 )......... 4

3. Preatrial processes of aedeagus enlarged and strongly serrated subapically on ventral margin ( Fig. 56 )... N. serratus sp. nov.

- Preatrial processes of aedeagus expanded apically with pair of prominent denticles on ventral margin ( Figs 36, 37 ).......................................................................................... N. bihamatus Xing & Li

4. Preatrial processes of aedeagus with pair of prominent denticles on ventral margin ( Figs 24, 25 )...... N. bidentatus sp. nov.

- Preatrial processes of aedeagus without prominent denticles on ventral margin ( Figs 17, 18 )........... N. abuensis sp. nov.

Figures

FIGURES 1 – 8. Species of Nicolaus. 1 & 2. N. abuensis sp. nov., female; 3 & 4. N. bidentatus sp. nov., male; 5 & 6. N. cornutus sp. nov., male; 7 – 10. Nicolaus bihamatus Xing & Li: 7 & 8. Female from Mudigere; 9 & 10. Male from Shillong.

FIGURES 41 – 49. Nicolaus cornutus sp. nov.: 41. Head and thorax, 42. Face; 43 & 44. Male genital capsule, lateral and dorsal views, respectively; 45. Profemur, anterior view as in Rakitov (1998); 46. Valve and subgenital plate, dorsal view; 47. Style, dorsal view; 48. Connective and aedeagus, dorsoanterior view; 49. Connective and aedeagus, lateral view.

FIGURES 28 – 40. Nicolaus bihamatus Xing & Li: 28. Head and thorax; 29. Face; 30. Male pygofer, lateral view (India); 31. Caudal region of pygofer, lateral view (India); 32 & 33. Variation in caudal region of pygofer, lateral view (Pakistan); 34. Connective, style, valve and subgenital plate, dorsal view (India); 35. Connective and aedeagus, ventroposterior view (India); 36 & 37. Lateral & latero-ventral views of aedeagus (India); 38 & 39. Variations in the distal apices of preatrial processes (Pakistan); 40. Female seventh sternite, mutilated along the hatched lines.

FIGURES 50 – 56. Nicolaus serratus sp. nov. 50 & 51. Male pygofer, lateral and dorsal views, respectively; 52. Base of aedeagus viewed in the direction of arrow shown in Fig. 55; 53. Connective and style, ventral view; 54. Valve and subgenital plates, ventral view; 55. Aedeagus, lateral view; 56. Aedeagus, anterodorsal view.

FIGURES 11 – 18. Nicolaus abuensis sp. nov.: 11 & 12. Head and thorax, female and male, respectively; 13. Male genital capsule, lateral view; 14. Mesal lobe of pygofer; 15. Connective, style, valve and subgenital plate, dorsal view; 16. Forewing; 17. Aedeagus, lateral view; 18. Aedeagus, dorsoanterior view.

FIGURES 19 – 27. Nicolaus bidentatus sp. nov.: 19. Face, 20. Head and thorax, lateral view; 21. Head and thorax, dorsal view; 22. Male pygofer, lateral view; 23. Valve, subgenital plate and style, ventral view; 24. Connective and aedeagus, dorsoanterior view; 25 & 26. Lateral views of aedeagus; 25. Female seventh sternite, ventral view.