This species has been found in goat pens with specimens of Triatoma infestans (De Santis et al. 1987). Y Carpintero (1981) found this species in rodent caves attacking Triatoma infestans in Córdoba province; in nests of Leñateros attacking nymphs of T. platensis in El Palmar, Entre Ríos province; and in Furnaridae nests attacking nymphs of T. infestans and T. platensis in Villa Elisa, Entre Ríos province.