Key to the male of species of Longchuanacris

1 Furculae with apex broadly rounded or roughly flat, width near apex broader than or equal to that at base................ 2

- Furculae with apex acute, width near apex distinctly narrower than that at base..................................... 3

2 Hind femora yellowish green with an orange-red ring before knee; furculae with apical margin smooth...... L. macrofurcula

- Hind femora greenish yellow without any colour ring before knee; furculae with preapical-inner angle forward curved as a styliform projection (Figs. 1–2)............................................................ L. lobata, sp. nov.

3 Furculae with width between outer margins at base narrower than or nearly equal to half width of supra-anal plate (Fig. 7).. 4

- Furculae with width between outer margins at base somewhat broader than or nearly equal to width of supra-anal plate..... 5

4 Hind femora with a broad, red ring before knee..................................................... L. bidentata

- Hind femora without any colour ring before knee (Figs. 15–16).............................. L. microfurcula, sp. nov.

5 Furculae entirely upright, triangular, apex caudally directed............................................. L. virida

- Furculae with basal half transverse and upright, apical half cephalically directed......................... L. curvifurcula