Key to males of the Brazilian species of Stegoelmis ( Elmidae: Elminae).

1 Elytral apices rounded and not dehiscent (Fig. 2)............................................................. 2

- Elytral apices not rounded and dehiscent (Fig. 1)............................................................. 3

2 Hypomeron with punctures about as dense as those of pronotal disc, ventrites I and II with entire surface densely and coarsely punctuate................................................................................... S. verrucata

- Hypomeron with punctures denser and coarser than those of pronotal disc, only ventrite I with surface of apical 2/3 densely and coarsely punctuate (Fig. 3)...................................................... S. figueiredoensis sp. nov.

3 Metatibiae with long, distinct, apicomedial cleaning fringe of dense, golden, hairlike setae on apical 1/4 (Fig. 1)................................................................................................ S. shepardi sp. nov.

- Metatibiae with very short, indistinct, apicomedial cleaning fringe of sparse, golden, hairlike setae (Fig. 2)............. 4

4 Distinct, deep and long longitudinal pronotal impression................................................... S. ica

- Indistinct, shallow and short longitudinal pronotal impression......................................... S. stictoides