Published online by Cambridge University Press: 31 May 2012
The South American species of Oplachantha Rondani are reviewed and a key to them presented. New species are atricalx, Peru; pallida, Colombia; albihirta, Colombia; fuscipes, Venezuela; divisa, Ecuador; and atriceps, Peru. New synonymies are (iubata Enderlein) = pulchella (Williston) and (tristis Enderlein) = cincticornis Enderlein. Allognosta Barbiellinii Bezzi, Hoplacantha nigerrima Lindner, and Antissops Bezzii Lindner, sometimes referred to this genus or to Berismyia, belong to an as yet undetermined genus.