Key to the males of Saetherocladius Andersen et Mendes

1. AR <0.51; virga <12 µm long.................................................................................................................................... 2

- AR> 0.69; virga> 15 µm long.................................................................................................................................... 4

2. Gonostylus without distinct outer projection; anal point parallel-sided or tapering..................................................... 3

- Gonostylus with distinct outer projection; anal point weakly spatulate (Fig. 17) ....................... S. triangulatus sp. n.

3. Gonostylus widest in basal half; inferior and superior volsella well separated, inferior volsella without dorsal microtrichia (Figs 1–2). ................................................................................................... S. hirtus Andersen et Mendes

- Gonostylus widest medially; inferior and superior volsella less well separated, inferior volsella with dorsal microtri- chia (Figs 6–8). .................................................................................................................................. S. fusticulus sp. n.

4. Inferior volsella sharply triangular; outer projection of gonostylus with bare, sclerotized apex; virga 16 μm long (Figs 12–13) ............................................................................................................................................. S. fusus sp. n.

- Inferior volsella bluntly triangular; outer projection of gonostylus with microtrichia towards apex; virga 24–26 μm long (Figs 23–25) .......................................................................................................................... S. urubiciensis sp. n.