Triatominae of the semi-arid Chaco in central Argentina

•Seven Triatominae species were reported invading houses in central Argentina.•T. guasayana and T. garciabesi were the most frequent species invading domiciles.•Peridomestic populations of T. infestans continue to be a challenge for vector control programs.•First record, in the study area, of a nymph of T. infestans captured in the wild environment.