Key to species of Canobolas

1 Elytra shining, not microreticulate (Figs 1, 7); apex of each elytron with short obtuse tooth; elytral stria 9 incomplete (Fig. 2), at least erased on middle third; antennae short, antonnomeres 9–10 broad, length 0.9–1.0x width (Figs. 13– 14); posterior of pronotal disc finely and sparsely punctured in contrast to strongly punctured sides (Fig. 7); metaventrite femoral plates with sinuate posterior margins (Figs 17–18) (New South Wales) ................................... 2

- Elytra duller, densely microreticulate (Figs 5–6); apex of each elytron with elongate acute tooth; elytral stria 9 entire on basal ¾ of elytra; antennae long, antennomeres 9–10 distinctly elongate, length 1.3–1.6x width (Figs 11–12); pronotum finely and almost evenly punctured throughout (Fig. 6); metaventrite femoral plates with arcuate posterior margins (Figs 15–16) (Western Australia) .................................................................................................................... 3

2(1) Punctures of basal half of elytral stria 3 separated by 2.5–3.5 puncture diameters (Fig. 7); apical strial punctures larger than basal; antennomeres 9–10 narrower, length = width (Fig. 14); first ventrite femoral plate smaller (Fig. 18); profile of penis thinner, without tip of flagellum visible in repose (Fig. 22) ......................... tubrabucca sp. nov.

- Punctures of basal half of elytral stria 3 separated by 1–2 puncture diameters (Fig. 1); apical elytral punctures not enlarged; antennomeres 9–10 broader, length 0.9x width (Fig. 13); first ventrite femoral plate larger (Fig. 17); profile of penis thicker, with flagellum prominent in repose (Fig. 21) ............................................................... nobilis (Lea)

3(1) Body more elongate, length 1.4–1.5x width; elytral apices irregularly surfaced, with small elevations (Fig. 6); posterior margin first ventrite femoral plate broadly rounded (Fig. 16); apex of penis thinner and less curved in profile (Fig. 20) .............................................................................................................................................. minang sp. nov.

- Body more rounded, length 1.1–1.25x width; elytral apices smooth (Fig. 5); posterior margin first ventrite femoral plate narrower, almost triangular (Fig. 15); apex of penis thicker and more curved in profile (Fig. 19) ...................... ............................................................................................................................................................... jarrah sp. nov.