International Journal of Primatology

, Volume 30, Issue 4, pp 533-551

First online:

A New Subspecies of Saguinus fuscicollis (Primates, Callitrichidae)

  • Fabio RöheAffiliated withWildlife Conservation SocietyDepartamento de Ecologia, Instituto Nacional de Pesquisas da AmazôniaDepartamento de Biologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas Email author 
  • , José de Sousa e SilvaJrAffiliated withCoordenação de Zoologia, Museu Paraense Emílio Goeldi
  • , Ricardo SampaioAffiliated withDepartamento de Ecologia, Instituto Nacional de Pesquisas da Amazônia
  • , Anthony B. RylandsAffiliated withCenter for Applied Biodiversity Science, Conservation International

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Saddleback tamarins (Saguinus fuscicollis, S. melanoleucus, and S. tripartitus) occur in the upper Amazon, west of the rios Madeira and Mamoré–Guaporé to the Andes. They currently comprise 13 species and subspecies in Bolivia, Brazil, Colombia, Ecuador, and Peru. Here we report on a previously undescribed subspecies of Saguinus fuscicollis from the interfluvium of the lower rios Madeira and Purus in the central Amazon of Brazil. It is a distinct form with a very pronounced mottling on the back giving the appearance of a saddle, a characteristic shared by the 3 species, and the reason for their collective common name. The lack of a white superciliary chevron and its highly mottled ochraceous-dark brown to black saddle that extends from the scapular region to the base of the tail distinguish the new taxon from Saguinus fuscicollis weddelli. The latter characteristic also distinguishes it from another saddleback tamarin (Saguinus fuscicollis ssp.) that has been reported immediately to the south of its range in the same interfluvium. We compare pelage coloration, external characters and craniometric measurements with its geographically closest relatives, Saguinus fuscicollis weddelli and S. f. avilapiresi, and indicate its probable geographic distribution in a small area between the rios Madeira and Purus, just south of the Rio Amazonas.


Callitrichidae Central Amazon geographic distribution Primates Saguinus fuscicollis ssp. n.