Callicebus olallae Lonnberg 1939
Creators: name: Russell A. Mittermeier
name: Anthony B. Rylands
name: Don E. Wilson
Publisher: name: Lynx Edicions
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Primates
Pitheciidae
Callicebus
Callicebus olallae

description: 4.
Olallas’ Tin
Callicebus olallae
French: Titi d'Olalla / German: Olalla-Springaffe / Spanish: Titi de los Olalla
Other common names: Beni Titi Monkey, Olalla Brothers’ Titi, Olallas’ Titi Monkey
Taxonomy. Callicebus olallae Lönnberg, 1939,
La Laguna (5 km from Santa Rosa), Rio Beni, Bolivia.
C. olallae is a member of the donacophilus species group. There may be some overlap with the distribution of C. modestus, although the two species appear to occur in distinct habitats. Monotypic.
Distribution. N Bolivia (SW Beni Department); distribution is poorly known, but it appears to be restricted to gallery forests and adjacent fragments of forest on the rios Yacuma and Manique.
Descriptive notes. Head—body 32-5 cm (males), tail 42-5 cm (males); weight ¢.800 g as for other members of the donacophilus species group. Body is uniformly orange. Tail is entirely dark agouti, contrasting with an orange back. Outer surfaces of limbs are reddish brown. Sideburns, beard, and forehead are blackish, forming a facial fringe; crown is reddish brown agouti. Ear tufts are weakly developed and whitish.
Habitat. Predominantly patches of gallery forest in a forest-savanna mosaic at elevations of up to 400 m. Olallas’ Titis are known to cross gaps between forest fragments of more than 300-400 m on the ground.
Food and Feeding. There is no specific information available for this species, but the diet of Olallas’ Titi is probably similar to that of othertitis, being highly frugivorous, with some consumption of leaves, flowers, and arthropods.
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. Census estimates of Olallas’ Titis showed densities of up to 11-5 groups/km?*, which suggest a home range size of c.10 ha. Much lower densities (as low as 1-8 groups/km?) have been recorded at other sites. Groups of only two individuals are the norm at mostsites, with a mean group size of 2-7 being recorded at onesite.
Status and Conservation. CITES Appendix II. Classified as Endangered on The IUCN Red List. Olallas’ Titi is threatened primarily by deforestation in its extremely small geographic distribution (400 km?). It is also hunted for pets or killed for use as bait. It is not found in any officially protected areas.
Bibliography. Anderson (1997), Brown & Rumiz (1986), Felton et al. (2006), Hershkovitz (1988, 1990), Lopez-Strauss (2008), Martinez & Wallace (2007, 2010, 2011), Mercado & Wallace (2010), Norconk (2011), Rowe & Martinez (2003), Salazar-Bravo et al. (2003), Tarifa (1996), Veiga, Wallace & Martinez (2008b).
description: Published as part of Russell A. Mittermeier, Anthony B. Rylands & Don E. Wilson, 2013, Phitheciidae, pp. 432-483 in Handbook of the Mammals of the World – Volume 3 Primates, Barcelona :Lynx Edicions on page 460, DOI: 10.5281/zenodo.6632289