DistributionRead full entry
Range DescriptionAccording to Hershkovitz (1984) and R. Wallace (pers. comm. 2007), S. b. boliviensis occurs in the upper Amazon, south of the Rio SolimÃµes-Amazonas, between the Rios JuruÃ¡ and Madeira in the states of Amazonas and Acre, into Bolivia, west of the Rio Negro in northern Santa Cruz Department, in the departments of Pando, Cochabamba, Beni, and Santa Cruz. Wallace et al. (1998) did not find squirrel monkeys in the Noel Kempf Mercado National Park, and indicated that there are no records of this subspecies east of Perseverancia where they surveyed, on the RÃo Negro, although there are reports of it occurring as far east as the upper RÃo San MartÃn. In Peru, Aquino and EncarnaciÃ³n (1994) indicated its occurrence south from the RÃo Abujao, Department of Ucayali, to Bolivia, and in parts of HuÃ¡naco, Pasco, JunÃn and Cusco. Altitudinal range according to Hershkovitz (1984) is 50 to 500 m above sea level. It is not known which of the two subspecies may occur on the upper Rio JuruÃ¡, between the west (left) bank of the Jurua and the RÃo Ipixuna in Brazil and north of the RÃo Sheshea to the Rio Abujao in Peru (Hershkovitz 1984; Aquino and EncarnaciÃ³n 1994).
Saimiri boliviensis peruviensis occurs south of the RÃos Amazon and MaraÃ±Ã³n, between the Rios Huallaga and Ucayali, from the west bank of the RÃo Tapiche (tributary of the Ucayali), south between the RÃos Pachitea and Tambo (Hershkovitz 1984). Hershkovitz (1984) indicated that the southern limits were unknown, but presumed to be at least as far as the RÃo Abujao (a west bank affluent of the RÃo Ucayali). Aquino and EncarnaciÃ³n (1994) indicated the region of the RÃo PerenÃ©, a tributary of the Rio Pachitea. Aquino and EncarnaciÃ³n (1994) reported that is sympatric with Saimiri sciureus macrodon east of the RÃo Ucayali from about 04ÂºS southward to the Rio Abujao. In their map, S. b. boliviensis extends across the Rio Blanco to the RÃo YavarÃ. Its occurrence in Brazil to the east of the Rio JavarÃ has not been documented.