This work represents the third contribution of a series of publications focused on the study of the natural history and evolution of the Tarsosteninae. The work includes four genera: Abiliella Peracchi, Ardearsus Opitz, new genus, Ochracea Opitz, new genus, and Somaovalis Opitz, new genus. Six new species are described: Abiliella albosutura Opitz, Abiliella galbina Opitz, Ardearsus morulus Opitz, Ochracea xanthosa Opitz, Somaovalis sexnaeva Opitz, and Somaovalis sinestigma Opitz. Among the species treated in this work, only Abiliella fasciata Peracchi was previously described. It is postulated that the genera and species in question originated in South America after the Andean orogenic events that took place during the Miocene. Included in this work are: a key to the genera and species, 17 line drawings, eight electron micrographs, seven color habitus photographs, six photographs of genitalia, a species-level phylogenetic tree, and one distributional map of the species.
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Vol. 70 • No. 1