Leaus

Key to the species of Leaus

1. Prothorax distinctly narrower than elytral bases, with lateral carinae entire, disc with a pair of low median tumosities (Figs 27, 30). Elytra with basal tumosities and a transverse depression behind them (Figs 33, 34). Total length> 5 mm............ 2

- Prothorax not or only slightly narrower than elytral bases, with lateral carinae dentate or crenulate (Figs 28, 29, 31, 32), disc evenly convex. Elytral disc only slightly uneven. Total length ≤ 4 mm.......................................... 3

2(1). Prothorax widest at middle (Fig. 27). Basal elytral tumosities not very prominent (Fig. 33). Legs uniformly castaneous. Ovi- positor with gonostyli. Western Tas......................................... L. tasmanicus Matthews & Lawrence

- Prothorax widest behind middle (Fig. 30). Basal elytral tumosities prominent (Fig. 34). Legs fuscous with contrasting flavo- castaneous bands. Ovipositor without gonostyli. NE NSW....................................... L. monteithi sp. n.

3(1). Lateral pronotal carinae irregularly dentate, prothorax a little narrower than elytral bases (Figs 28, 29). Qld wet tropics........................................................................................... L. tropicalis sp. n.

- Lateral pronotal carinae regularly denticulate or crenulate. Prothorax as wide as elytral bases (Figs 31, 32).............. 4

4(3). Lateral pronotal carinae crenulate (Fig. 31). NE NSW............................................. L. elusus sp. n.

- Lateral pronotal carinae evenly denticulate (Fig. 32). SE Qld............................................... L. sp.