Cricotopus

Key to adult males of Australian Cricotopus

(excluding C. howensis, C. wangi, inadequately known as adult male)

1 Tergite IV wholly pale (Fig. 1 B,F,H,I)..................................................................... 2

- Tergite IV wholly (Fig. 1 A,E,G) or partly (Fig. 1 C,D) dark..................................................... 5

2 Tibiae and tarsomeres of mid- and hind legs pale (Fig. 1 B,H)................................................... 3

- Tibiae of all legs dark, with or without pale bands; all tarsomeres dark (Fig. 1 F,I)................................... 4

3 All legs pale apart from small dark patch proximal on tibia (Fig. 1 H)............................... C. tasmania sp. n.

- All femora pigmented, tarsomeres of fore-leg darkened (Fig. 1 B)........................ C. albitarsis Hergstrom sp. n.

4 Tergite IV with median and lateral setae separate (Fig. 3 F)...................................... C. varicornis sp. n.

- Tergite IV with median and lateral setae connected by posterior setae (Fig. 3 G)........................ C. hillmani sp. n.

5 Tergite I dark (Fig. 1 A,E,G)............................................................................. 6

- Tergite I pale (Fig. 1 C,D)............................................................................... 8

6 All tibiae with pale bands (Fig. 1 G)............................................. C. parbicinctus Hergstrom sp. n.

- All tibiae uniformly dark (Fig. 1 A,E)...................................................................... 7

7 Inferior volsella bilobed (Fig. 2 A)........................................................... C. acornis sp. n.

- Inferior volsella unilobed (Fig. 1 E)......................................................... C. conicornis sp. n.

8 Tergites II, IV, V & VI dark with pale anterior band (Fig. 1 C), inferior volsella bilobed or rounded (Fig. 2 C)............................................................................................... C. annuliventris (Skuse)

- Tergite II mid brown with pale posterior band, tergites III & IV dark with pale anterior and posterior pale bands (Fig. 1 D), infe- rior volsella elongate, pointing posteriorly (Fig. 2 D).......................................... C. brevicornis sp. n.