Key to the tribes of Australian Cicadettinae (= Tibicininae auct.)

Some characters used here for distinguishing Australian tribes may not be applicable to some non- Australian species belonging to these tribes.

1 Fore wing with 9 or more apical cells ........................................................................................... 2

—— Fore wing with 8 apical cells ......................................................................................................... 3

2 Head narrower than maximum width of pronotum ................................................... Chlorocystini

—— Head wider than maximum width of pronotum .............................. Taphurini (subtribe Tryellina)

3 Fore wing costa broadest near node .......................................................................... Chlorocystini

—— Fore wing costa not broadest near node, tending to be parallelsided ............................................................................................................................................... 4

4 Hind wing veins CuP and 1A fused in part ........................................................................ Prasiini

—— Hind wing veins CuP and 1A unfused ........................................................................................... 5

5 Fore wing veins M and CuA meeting the basal cells with their stems confluent .............................................................................................................. Cicadettini

—— Fore wing veins M and CuA meeting the basal cell clearly separated ......................................................................................................................................... 6

6 Male ................................................................................................................................................ 7

—— Female ...................................................................... Cicadettini or Taphurini (subtribe Tryellina)

7 Opercula within confines of tympanal cavity ................................................................ Cicadettini

—— Opercula extending distally beyond tympanal cavity ..................... Taphurini (subtribe Tryellina)