Callicebus vieirai, Gualda-Barros, Nascimento & Amaral, 2012

Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Phitheciidae, Handbook of the Mammals of the World – Volume 3 Primates, Barcelona: Lynx Edicions, pp. 432-483 : 467

17.

Vieira’s Titi

Callicebus vieirai

French: Titi de Vieira / German: Vieira-Springaffe / Spanish: Titi de Vieira

Taxonomy. Callicebus vieirai Gualda-Barros et al., 2012 ,

Rio Renato, a right (east) bank tributary of the Rio Teles Pires near the town of Claudia, in Mato Grosso State, Brazil (11°33 8, 55° 10° W) .

C. vieirai 1s presumably a member of the C. moloch species group. Monotypic.

Distribution. Brazilian Amazon, S of the Rio Amazonas, between the rios Xingu and Iriri in the states of Para and Mato Grosso. Only three widely separated localities are known, one is relatively close to the type locality and another on the right (S) bank of the Rio Iriri in Para.

Descriptive notes. Head-body 30-34.8 cm (males) and 30-5 cm (females), tail 41-51 cm (females) and 46 cm (females); weight 960 g (males). Male and female Vieira’s Tits are indistinguishable in size and coloration. Overall coloration is pale, grayishbrown agouti mainly on crown, nape, dorsum, tail, and dorsal sides of limbs. Hands, feet, and tip oftail are white; belly and ventral sides of limbs are orangey. Forehead, crown, and beard are whitish, surrounding a dark face.

Habitat. Lowland terra firma rainforest, riparian forest, and Mauritia flexuosa palm swamp.

Food and Feeding. There is no information available for this species.

Breeding. There is no specific information available for this species, but all titis form monogamous breeding pairs. The male provides parental care by carrying the single offspring.

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. Vieira’s Titi was discovered in 2012, and its conservation status has yet to be evaluated. While it apparently occurs over a relatively wide area,its occurrence in this area is unclear, but it may be comparable to the closely related Red-bellied Titi ( C. moloch ) that has a patchy distribution in the same region. Ongoing colonization projects, logging, and the construction of hydroelectric reservoirs may be a threat throughout its distribution.

Bibliography. Ferrari et al. (2007), Gualda-Barros et al. (2012), Norconk (2011).

Figures

On following pages: 20. Madidi Titi (Callicebus aureipalatii); 21. Medem'’s Titi (Callicebus medemi); 22. White-collared Titi (Callicebus torquatus); 23. White-chested Titi (Callicebus lugens); 24. Yellow-handed Titi (Callicebus lucifen; 25. Rio Purus Titi (Callicebus purinus); 26. Rio Jurué Collared Titi (Callicebus regulus); 27. Black-fronted Titi (Callicebus nigrifrons); 28. Masked Titi (Callicebus personatus); 29. Southern Bahian Titi (Callicebus melanochir); 30. Blond Titi (Callicebus barbarabrownae); 31. Coimbra-Filho's Titi (Callicebus coimbral).

Distribution. Brazilian Amazon, S of the Rio Amazonas, between the rios Xingu and Iriri in the states of Para and Mato Grosso. Only three widely separated localities are known, one is relatively close to the type locality and another on the right (S) bank of the Rio Iriri in Para.