Key to Oriental/Australasian Physoderinae genera

1. Scutellum with distinct paired lateral tubercles; mesosternum with three longitudinal rows of setae ......................................................................................................... Nanophysoderes gen. nov.

– Scutellum without paired lateral tubercles; mesosternum with one or no longitudinal rows of setae....................................................................................................................................................2

2. Antero-lateral pronotal projection obsolete ...................................... Paraphysoderes Villiers, 1962

– Antero-lateral pronotal projection acute or truncated......................................................................3

3. Eyes very large, distinctly projecting in dorsal view, sometimes attaining ventral margin of head in lateral view; antero-lateral pronotal projection often truncate; pronotum glabrous .......... ............................................................................................................. Macrophysoderes gen. nov.

– Eyes large, not distinctly projecting in dorsal view, not attaining ventral margin of head in lateral view; antero-lateral pronotal projection acute, not truncate (except P. nigripennis); pronotum with various forms of setation...................................................................................................................4

4. Scape surpassing apex of clypeus; anterior pronotal lobe narrower than posterior lobe in both sexes; parascutellar lobes semicircular ..................................................... Breviphysoderes gen. nov.

– Scape not surpassing apex of clypeus; anterior pronotal lobe often wider than posterior lobe in males; parascutellar lobes rounded, often skewed towards median of pronotum .............................. ................................................................................................................ Physoderes Westwood, 1845