Argia nataliae n. sp. (Holotype ♂: COLOMBIA, Antioquia Department, Estación Cristalina, about. 28 km west of Puerto Berrio, ca. 6.41 N, 74.58 W, 16 ii 1917, Jesse Hunter Edward Bruce Williamson leg., in University of Michigan [UMMZ]) is described and illustrated and compared with similar species.
Keywords: Damselfly, description, Neotropical, Odonata.