The Chacoan peccary Catagonus wagneri is the rarest and most threatened of the three extant species of peccary. Its presence has been recorded in the northern Dry Chaco ecoregion, which spans northern Argentina, western Paraguay and south-eastern Bolivia. However, distribution models based on its occurrence in Argentina have predicted that suitable habitat extends southwards into central Argentina, where the species was not previously recorded. We present several records of the species outside the currently accepted distribution, including the first two records in the west of Córdoba province, > 650 km south of the southern limit of the previously known distribution. The discovery of the Chacoan peccary in central Argentina could serve as a justification for the protection of Chacoan forests in this region, where deforestation rates are among the highest worldwide.

A short list of small mammals is provided, from bones found in pellets of the American barn owl (Tyto furcata) collected in four localities in the Arid Chaco of Córdoba province, central Argentina. We identified seven species and one genus belonging to two orders (Didelphimorphia and Rodentia) and four families (Didelphidae, Cricetidae, Ctenomyidae and Caviidae). We also present the first records of Microcavia jayat Teta, Ojeda, Lucero & D'Elia, 2017 for Córdoba province. RESUMENSe detalla una breve lista de micromamíferos, a partir de restos óseos encontrados en egagrópilas de Lechuza de campanario (Tyto furcata) en cuatro sitios del chaco árido de la provincia de Córdoba, República Argentina. Se identificaron en total siete especies y un género pertenecientes a dos órdenes (Didelphimorphia y Rodentia) y cuatro familias (Didelphidae, Cricetidae, Ctenomyidae y Caviidae).