39. Martins’s Bare-faced Tamarin Saguinus martinsi French: Tamarin de Martins / German: Ockermanteltamarin / Spanish: Tamarin de Martins Other common names: Martins's Tamarin (martinsi), Ocherous Bare-faced Tamarin (ochraceus) Taxonomy. Leontocebus martinsi Thomas, 1912, Faro, Para, Brazil. Formerly considered a subspecies of S. bicolor. The form ochraceus may be a hybrid S. martinsi x S. bicolor. Two subspecies recognized. Subspecies and Distribution. S. m. martinst Thomas, 1912 — Brazilian Amazon, between the rios Nhamunda and Trombetas, N of the Rio Amazonas. S. m. ochraceus Hershkovitz, 1966 — Brazilian Amazon, between the rios Uatuma and Nhamunda, N of the Rio Amazonas. Descriptive notes. Head-body 21-28 cm, tail 34-42 cm; weight 400-600 g. The body of Martins’s Bare-faced Tamarin is uniformly brownish above from crown to tail base, paler on flanks and shoulders, buffy on limbs, and orange below. As in the Pied Tamarin (S. bicolor), the face and forepart of the crown are almost naked. The “Martins’s Tamarin” (S. m. martinsi) is dark agouti-brown above, with orange underparts and white hands and feet. There are blue spots on the ears, and the head is puce. There is no white on the ruff or nape. The “Ocherous Bare-faced Tamarin” (S. m. ochraceus) is paler and less distinctly agouti-banded than the Martins’s Tamarin, being generally yellowish-brown above, with golden-orange underparts. There are silvery to buffy tones on the ruff and nape, and the neck and base of the mantle are grayish-ocher or yellowish-gray. Habitat. Primary and secondary lowland rainforest. Martins’s Bare-faced Tamarin adapts well to disturbed forest. Food and Feeding. There is no information available for this species. Breeding. There is no information available for this species. Activity patterns. There is no information available for this species. Movements, Home range and Social organization. There is no information available for this species. Status and Conservation. CITES Appendix II. Classified as Least Concern on The IUCN Red List. Very little is known about Martins’s Bare-faced Tamarin; however, evidence is emerging that its distribution is smaller than supposed and it is suffering invasion of their forests and displacement by the Midas Tamarin (S. midas). With bauxite mining, construction of a shipping port, and spreading colonization and urbanization of the entire region by humans, Martins’s Bare-faced Tamarin may be Near Threatened. The Martins’s Tamarin occurs in Saraca-Taquera National Forest on the west bank of the Rio Trombetas. The Ocherous Bare-faced Tamarin probably occurs in Nhamunda State Park and Nhamunda State Environment Protection Area, Amazonas State. Bibliography. Coimbra-Filho (1987), Coimbra-Filho et al. (1997), Hershkovitz (1966, 1977), Oliveira, Loretto et al. (2009), Oliveira, Mendel et al. (2004), Rylands et al. (1993).

Published as part of Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Callitrichiade, pp. 262-346 in Handbook of the Mammals of the World – Volume 3 Primates, Barcelona :Lynx Edicions on page 338, DOI: 10.5281/zenodo.5730714