Ancylometes rufus is a species from the genus Ancylometes.Walckenaer, C. A. (1837). Histoire naturelle des insectes. Aptères. Tome premier. Roret, Paris 682 pp., Pl. 1-, 15. The species was originally described by Charles Athanase Walckenaer in 1837. It is typically found near water. It has been seen predating on frogs, Dendropsophus melanargyreus and Ameerega trivittata
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