Key to species of Leptocysta

1 Margins of hemelytra subparallel (Figs. 13, 15).......................................................................................................... 2

- Margins of hemelytra convex (Figs. 11, 12, 14, 16) ................................................................................................... 3

2 External margin of hemelytra without spines, subcostal area with one row of areolae, margins of paranota with weackly developed spines (Figs. 7, 13) ....................................................................................................... L. notialis

- External margin of hemelytra with spines, subcostal area with two rows of areolae, margins of paranota with well developed spines (Figs. 9, 15) ................................................................................................................. L. sexnebulosa

3 Margins of paranota and hemelytra completely covered with spines (Figs. 10, 16) ........................................ L. tertia

- Margins of paranota and hemelytra without spines or only partially covered with spines (Figs. 5, 6, 8, 11, 12, 14). 4

4 Paranota subrounded with a few small scattered spines (Fig. 5) ......................................................... L. dellapei n. sp.

- Paranota subrectangular with large spines distributed on anterior and posterior paranotal margins (Figs. 6, 8) ....... 5

5 Hemelytra maximum convexity at anterior third, costal area at base with three rows of areolae, subcostal area with three rows of areolae (Fig. 12) ........................................................................................................... L. delrioae n. sp.

- Hemelytra maximum convexity at base, costal area at base with four rows of areolae, subcostal area with two rows of areolae (Fig. 14) ........................................................................................................................................ L. novatis