Key to male adults of species of Polypedilum (Asheum)

1. Gonocoxite and gonostylus stout (Fig. 3A)................................................................. 2

- Gonocoxite and gonostylus relatively slender (Figs 1A and 2A)................................................. 3

2. Superior volsella distinctly boot shaped. Caribbean and U.S.A. ................. Polypedilum (Asheum) beckae (Sublette)

- Superior volsella variable, with slightly to strongly concave apical outer margin, and hooked apical projection. South America.............................................................. Polypedilum (Asheum) curticaudatum Rempel

3. Superior volsella gently tapering to a non-sigmoidal and short apical projection (Fig. 1B). Brazil (Rondônia and Mato Grosso)..................................................................... Polypedilum (Asheum) sofiae sp. n.

- Superior volsella abruptly tapering to a sigmoidal and long apical projection (Fig. 2B). Brazil (Bahia)........................................................................................ Polypedilum (Asheum) mayrahu sp. n.