Key to species of the genus Furcilarnaca

1 Tegmina rather extending beyond apex of hind femur.......................................................... 2

- Tegmina not reaching apex of hind femur................................................................... 8

2 Last abdominal tergite of male without spine. (Fig. 1).................................... F. fallax (Liu et al., 2010)

- Last abdominal tergite of male with 2 or 4 spines............................................................ 3

3 Subgenital plate of male divided at apex. (Fig. 3).................................... F. forceps (Bey-Bienko, 1962)

- Subgenital plate of male deeply divided to basal half.......................................................... 4

4 Lobes of male subgenital plate with acute apex.............................................................. 5

- Lobes of male subgenital plate with obtuse apex. (Figs. 6, 7)................................... F. fractiflexa sp. nov.

5 Lobes of male subgenital plate broader (Fig. 8), apical part incurved. (Fig. 9).............. F. chirurga (Bey-Bienko, 1962)

- Lobes of male subgenital plate narrow, apical part curved externally..............................................6

6 Lobes of male subgenital plate not hirsute.................................................................. 7

- Lobes of male subgenital plate hirsute. (Fig. 10)................................................. F. hirta sp. nov.

7 Apical half of lateral lobes of subgenital plate distinctly curved upwards. (Figs. 12, 13)....... F. superfurca Gorochov, 2004

- Apical half of lateral lobes of subgenital plate, not curved upwards. (Fig. 15)......................... F. affinis sp. nov.

8 Tegmina reaching or exceeding apex of abdomen............................................................ 9

- Tegmina not reaching apex of abdomen.................................................. F. brachyptera sp. nov.

9 Last abdominal tergite of male with paired of processes...................................................... 10

- Last abdominal tergite of male without paired of processes.................................................... 11

10 Last abdominal tergite of male with one pair of processes. (Fig. 18)....................... F. beybienkoi Gorochov, 2004

- Last abdominal tergite of male with two pairs of processes. (Figs. 20, 21)................... F. armata (Bey-Bienko, 1957)

11 Subgenital plate of male with lobes subcontiguous and apex not pointed. (Fig. 23)................. F. p u l e x (Karny, 1928)

- Subgenital plate of male with lobes remote and apically pointed................................................ 12

12 Subgenital plate of male with apex broadly notched. (Fig. 25).............................. F. huangi Gorochov, 2004

- Subgenital plate of male with apex narrowly notched. (Fig. 27, 28)...................... F. wufengensis Bian et al. 2013