Key to the males of Margattea from China

1. Tegmina and wings slightly reduced, not extending beyond apex of abdomen, or greatly reduced...........2

- Tegmina and wings fully developed, extending well beyond the apex of abdomen...................................3

2. Tegmina and wings greatly reduced, barely reach middle of abdomen ................................... M. hemiptera

- Tegmina and wings slightly reduced, extending almost to the apex of abdomen. ..................... M. nimbata

3. Pronotal disk dark brown, tegmen pale brown; styles slender, distinctly longer than interstylar space (fig. 2) .................................................................................................................................................. M.limbata

- Pronotal disk not as above..........................................................................................................................4

4. The eighth tergum unspecialized ................................................................................ M. producta, sp. nov.

- The eighth tergum specialized, with a group of setae near posteromedian margin (fig.14, 42)..................5

5. Pronotal disk castaneous with several symmetrical white spots (fig. 32) ......... M. multipunctata, sp. nov.

- Pronotal disk not as above...........................................................................................................................6

6. The front femur Type B2, distal part just with 2 larger spines (fig. 27) ...................... M. concava, sp. nov.

- The front femur Type B3, distal part with 3 larger spines, one slightly shorter than others, but distinctly longer than minute spines (fig.13, 41).........................................................................................................7

7. Interstylar plate semicircular, hind margin armed with small spines (fig. 16) .......................... M. spinifera

- Interstylar margin not as above .............................................................................. M. mckittrickae, sp. nov.