FIGURES 57–64 in Four new species of the grass feeding leafhopper genus Nicolaus Lindberg (Hemiptera: Cicadellidae: Deltocephalinae) from the Indian subcontinent

FIGURES 57–64. Female valvulae of Nicolaus. 57–60. Nicolaus abuensis sp. nov.: 57. First pair of valvulae, lateral view; 58. Apex of first pair of valvulae magnified; 59. Second pair of valvulae, lateral view; 60. Apex of second pair of valvulae, magnified. 61–64. Nicolaus bidentatus sp. nov. 61. First pair of valvulae, lateral view; 62. Apex of first pair of valvulae magnified; 63. Second pair of valvulae, lateral view; 64. Apex of second pair of valvulae, magnified.