The east slope of the Cordillera Central in central Perú, as far north as 06°56’S, 20 km south-east of Leimebamba, dpto. San Martín (Mark et al. 2008). Southern limit until recently thought to be c.10°37’S, near Millpo, dpto. Pasco, close to the border with Huánuco, but the Pardusco now is known as far south as c.11°29'S, near Puente Carrizales, dpto. Junín (Witt and Lane in press).