Lacusa Stål, 1862

Wang, Menglin, Soulier-Perkins, Adeline, Wang, Yinglun & Bourgoin, Thierry, 2016, Taxonomic updates and descriptions of four new Lophopini planthopper species (Hemiptera, Fulgoroidea, Lophopidae) from Yunnan province, South China, European Journal of Taxonomy 185, pp. 1-25 : 15

Key to species of the genus Lacusa Stål, 1862 (modified from Xing & Chen 2014)

1. Tip of the tegmina bearing a branched pattern ( Fig. 63 ) ................................................................... 2 – Tip of the tegmina bearing an unbranched pattern ( Fig. 74 ) ................. L. fuscofasciata ( Stål, 1854)

2. Median periandrium processes long, extending beyond the apex of periandrium dorsally ................ .......................................................................................................... L. producta Xing & Chen, 2014

– Median periandrium processes short, not extending dorsally beyond the apex of periandrium ( Fig. 70 , Mpp) ................................................................................................................................. 3

3. Median extension of periandrium as developed as paired median processes of the periandrium....... ............................................................................................................ L. digitata Xing & Chen, 2014

– Median extension of periandrium longer and wider than paired median processes of the periandrium ( Fig. 70 ) .................................................................... L. yunnanensis Chou & Huang, 1985 stat. rev.

Figures

Figs 58–70. Lacusa yunnanensis Chou & Huang, 1985 stat. rev., holotype, ♂. 58. Habitus, dorsal view. 59. Habitus, lateral view. 60. Head, lateral view. 61. Head and thorax, dorsal view. 62. Frontal view. 63. Tegmina. 64. Labels. 65. Male terminalia, lateral view. 66. Male terminalia, ventral view. 67. Phallic complex, ventral view. 68. Anal tube, dorsal view. 69. Gonostylus, lateral view. 70. Phallic complex and tectiform structure, lateral view. Scale bars: 58–63 = 1 mm; 65–70 = 0.2 mm.

Figs 74–78. Lacusa fuscofasciata (Stål, 1854), holotype, ♀. 74. Habitus, dorsal view. 75. Head and thorax, dorsal view. 76. Frons and clypeus, frontal view. 77. Female terminalia, ¾ ventral view. 78. Labels. Scale bars = 1 mm.