Key to species of Amplisegmentum

1. Parafacial setae present; male frons width at narrowest point equal to width of anterior ocellus; dorsocentral setae present; wing uniformly hyaline (Figs 5, 6).......................................................... A. ecuadorensis Webb.

- Parafacial setae absent; male frons width at narrowest point slightly wider than ocellar tubercle; dorsocentral setae absent; wing hyaline with dark infuscation at apices of basal-medial and discal cells (Figs 1–4)................. A. venezuelensis sp. n.