This species is found in southeastern Peru and western Brazil (the upper Jarú River). Specimens were also captured in Leticia (extreme southeast of Colombia) and Iquitos, Peru (lzor and Pine, 1987), although these were probably examples of introduced individuals. It is found up to an altitude of 700 m, and is known for certain from around five scattered localities. There has been little sampling in the intervening habitat in Bolivia, however, likely occurs there.