Key to genera of Australian Cixiini

1 Median carina of frons forked (Löcker 2015: Figs 6C, 6E)..................................................... 2

– Median carina of frons unforked (Figs 4C)................................................................. 3

2(1) First hind tarsomere with 8 apical teeth and 4 setae; angle formed by hind margin of pronotum rectangular or moderately obtuse; lateral carinae of pronotum c-shaped, lateral parts directed towards head (Löcker 2015: Fig. 6D); vertex in midline at least twice as long as pronotum........................................................... Yanganaka Löcker, 2015

– First hind tarsomere with 5-7 apical teeth and no setae; angle formed by hind margin of pronotum broadly obtuse; lateral carinae of pronotum s-shaped, second bend turning towards mesonotum (Löcker 2015: Fig. 6B); vertex in midline about as long as pronotum................................................................................ Aka White, 1879

3(1) Second hind tarsomere without platellae, but with three or fewer very fine setae (Figs 3F, 6E, 7E)..................... 4

– Second hind tarsomere with four or more platellae (Löcker 2020: Fig. 7E)........................................ 7

4(3) Apical transverse carina of vertex deeply u-shaped (Figs 3E, 4D, 7D)............................................ 5

– Apical transverse carina of vertex v-shaped, shallowly u-shaped or almost straight (Löcker 2020: Figs 3E, 5C, 6C, 7B, 8B).. ................................................................................................... 6

5(4) Widest part of frons distinctly ventrad of centre of frontoclypeal suture (Fig. 7C); fork of CuA1 and CuA 2 in basal half of forewing (Fig. 8); RP trifid (Fig. 8)........................................................ Latissima gen. nov.

– Widest part of frons distinctly dorsad of centre of frontoclypeal suture (Figs 3D, 5D); fork of CuA1 and CuA 2 in apical half of forewing (Figs 3A, 5A, 5B); RP unforked (Figs 4A, 5A, 5B) or bifid (Figs 3A, 6A)......... Monomalpha Emeljanov, 2000

6(4) Basal compartment of vertex about as long as wide (Löcker 2020: Figs 8B, 9B, 9E)............... Yamirrina Löcker, 2000

–. Basal compartment of vertex no more than half as long as wide (Löcker 2014a: Fig. 4B)............................................................................................................. Leptolamia Metcalf, 1936

7(3) Second hind tarsomere with two fewer platellae than apical teeth (Löcker 2020: Fig. 7E); forewing with CuA2 reaching the margin of forewing in its entire thickness (Löcker 2020: Figs 6A, 18A).......................................... 8

–. Second hind tarsomere with four fewer platellae than apical teeth; forewing with CuA2 either ending well before it reaches the margin of the forewing or reaching the margin but with slightly reduced thickness (Löcker 2014b: Fig. 1)............................................................................................... Calamister Kirkaldy, 1906

8(7) Male anal tube with ventral lobe in lateral view narrow near base, widening towards apex. Male anal style about as long as remainder of 11th segment (Löcker & Holzinger 2019: Fig. 23E). Forewing with crossvein r-m1 usually distad (Löcker & Holzinger 2019: Fig. 28H) or at same level as fork MP1+2 and MP3+4. Radius anterior (RA) forked or unforked......................................................................................... Chidaea Emeljanov, 2000

– Male anal tube with ventral lobe in lateral view tapering (widest near base). Male anal style distinctly longer than remainder of 11th segment (remainder of 11th segment about 2/3-3/4 as long as anal style). Forewing with crossvein r-m1 usually distinctly basad of fork MP1+2 and MP3+4. RA unforked.............................................. Leades Jacobi, 1928