Key to the Australian species of Rhabdomastix (Rhabdomastix)

(working probably only for males)

1. Wing membrane without distinct dark patches except some darkening in the pterostigma area; vein A 2 straight, slightly curved or sinuous (Figs. 60–65)................................................................................ 2

- Wing membrane with distinct dark patches in costal, subcostal, radial and anal space; vein A 2 distinctly sinuous (Figs. 69–72) ................................................................................................... 8

2. Cross-vein m-m lacking, leaving discoidal cell open (Fig. 60); segment 9 a closed ring (with narrow dorsal bridge)................................................................................................... R. ponticulus

- Cross-vein m-m present, discoidal cell closed (Figs. 61–65); segment 9 dorsally interrupted.......................... 3

3. Anal angle indistinct, hardly developed (Fig. 61)................................................. R. ostensackeni

- Anal angle distinctly developed (Figs. 62–65)............................................................... 4

4. Vein R 3 distinctly oblique, veins R 4 and R 5 running parallel or almost so (Fig. 62)........................ R. dooragana

- Vein R 3 almost vertical to slightly oblique, veins R 4 and R 5 apically diverging (Figs. 63–65).......................... 5

5. Wing length> 5 mm; vein A 2 long, evenly sinuous, mostly ending well beyond level origin of Rs (Fig. 63)......... R. nivalis

- Wing length <5 mm: vein A 2 shorter, straight, curved or slightly sinuous, ending very close to or well before level origin of Rs (Figs. 64, 65)......................................................................................... 6

6. Vein A 2 largely almost straight or slightly sinuous, then arching/bending to end almost perpendicular or steep to wing margin close to level origin of Rs, making cell A 2 substantial (Fig. 64); antenna very short (markedly shorter than 1 mm) (Fig. 66)............................................................................................ R. borroloola

- Vein A 2 slightly sinuous, ending well before level origin of Rs, making cell A 2 moderate in size (Fig. 65); antennae longer (at least 1 mm to more than 2 mm) (Figs. 67, 68)............................................................... 7

7. Antennae at least 2 mm long, with very long, strongly developed pubescence (Fig. 67)....................... R. hirsuta

- Antennae about 1 mm long with less strongly developed pubescence (Fig. 68)........................ R. dobrotworskyi

8. Cell dm not produced along vein M 1+2 (Fig. 69).................................................... R. wilsoniana

- Cell dm produced along vein M 1+2 (Figs. 70–72)............................................................. 9

9. No dark patch between level origin of Rs and cord level (Fig. 70)..................................... R. collessiana

- A dark patch between level origin of Rs and cord level (Figs. 71, 72)........................................... 10

10. Thorax vividly patterned dark brown and yellow (Fig. 73)................................................ R. rosae

- Thorax more or less uniformly dark (Fig. 74)..................................................... R. tonnoirana