Key to males of Haplosymploce worldwide*

1. Only the first abdominal tergum specialized......................................................( pica group)...2

- The first and seventh abdominal terga specialized................................................( nigra group)...4

2. Tegmina yellowish, basal and apical regions black.................................................... H. bicolor

- Tegmina black with pale maculae on the costal field and the basal anal field....................................... 3

3. Pronotum black.................................................................................. H. pica

- Pronotum red............................................................................... .. H. ruficollis

4. A pair of filamentous membranes arising from the posterior margin of the metanotum extend to the first abdominal tergum (Fig. 14).................................................................................. H. andamanica

- No filamentous membrane arising from the margin of the metanotum (Fig. 27)..................................... 5

5. Tegmina pale yellowish-white whereas pronotum dark................................................. H. montis

- Tegmina and pronotum dark (Figs. 4, 6).................................................................... 6

6. Femora pale yellowish, black brown at apex; male supraanal plate blunt at hind margin...................... H. reversa

- Femora black (Figs. 5, 7), supraanal plate of male nearly truncated (Fig. 29).......................................7

7. Antennae and cerci orangish yellow, intercercal processes slim (Fig. 29)........................... H. aurantiaca sp. n.

- Antennae and cerci black, intercercal processes sturdy.................................................. H. nigra