Key to the species of Pitambara Distant, 1906

1. Tegmina with a costal hyaline patch (Figs 1, 5, 16, 27, Chp)............................................................ 2

– Costal hyaline patch absent ............................................................................................................. 10

2. Apical hyaline patch of tegmina without any stripe inside......................... P. dawnana Distant, 1912

– Apical hyaline patch of tegmina with a sinuate stripe inside (Figs 3, 5, 16, 27, Ahp) ...................... 3

3. Apical hyaline patch of tegmina delineated by the B line (Fig. 2) ............... P. montana Distant, 1912

– Apical hyaline patch of tegmina delineated by the A line (Fig. 2) .................................................... 4

4. Frons with the area between sublateral carinae reddish ........................ P. rubrofasciata Liang, 2000

– Frons with the area between sublateral carinae not reddish .............................................................. 5

5. Vertex with three longitudinal stripes (Figs 8, 19, 30) ...................................................................... 6

– Vertex without stripe.................................................................................. P. assamensis Liang, 2000

6. Frons white, sublateral carinae brown, with two brown bands near lateral angles of frons (Fig. 31)... ...................................................................................................... P. tricorne Wang & Wang, sp. nov.

– Coloration of frons and carinae different........................................................................................... 7

7. Frons with a white transverse band at base (Fig. 9) .......................................................................... 8

– Frons without white transverse band at base ..................................................................................... 9

8. Longitudinal stripes on vertex extremely slim ......................................... P. interrupta Distant, 1906

– Longitudinal stripes on vertex thick (Fig. 8) ....... P. triremiprocta Wang & Soulier-Perkins, sp. nov.

9. Tegmina with a basal hyaline patch (Figs 1, 16, Bhp).......... P. impudica Wang & Bourgoin, sp. nov.

– Basal hyaline patch absent................................................................. P. tonkinensis Lallemand, 1942

10. Tegmina with median hyaline patch (Fig. 1, Mhp)...........................................................................11

– Median hyaline patch absent ........................................................................................................... 12

11. Frons reddish in median and lateral part.......................................................... P. tagalica (Stål, 1854)

– Frons yellowish, without any red colour .................................................... P. undulata Distant, 1906

12. Vertex with a longitudinal stripe...................................................................................................... 13

– Vertex without any marking............................................................................................................. 14

13. Apical hyaline patch of tegmina containing a thick stripe reaching the apical margin of tegmina by one end (Fig. 4); sublateral carinae of frons brownish .......................... P. nigrofuscata Liang, 2000

– Apical hyaline patch of tegmina containing a slim sinuate brownish line the apical margin of tegmina by both of its ends (Fig. 3); sublateral carinae of frons yellowish................... P. sinuata Distant, 1906

14. Tegmina mostly brownish, some discolorations are present on the basal and claval area; fore femora with basal half black, apical half yellowish with two fuscous stripes.......... P. radians (Kirby, 1891)

– Tegmina mostly black without any discoloration within the medo-basal and claval area; fore femora yellowish with several fuscous transverse stripes ..................................... P. borneensis Baker, 1925