Callicebus stephennashi

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Bibliography

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	MAMMALIA	PRIMATES	PITHECIIDAE

Scientific Name:

Callicebus stephennashi

Species Authority:

M. van Roosmalen, T. van Roosmalen & R.A. Mittermeier, 2002

Common Name/s:

English	–	Stephen Nash’s Titi Monkey, Stephen Nash's Titi Monkey
Spanish	–	Zogue-zogue

Taxonomic Notes:

The precise type locality of this species is unknown. The holotype is aid to have come from along the middle to upper Rio Purús together with the paratypes. van Roosmalen et al. (2002) argued that the species seems to be phenotypically most closely related to both C. caligatus and C. dubius.

Assessment Information [top]

Red List Category & Criteria:

Data Deficient ver 3.1

Year Assessed:

2008

Assessor/s:

Veiga, L.M.

Reviewer/s:

Mittermeier, R.A. & Rylands, A.B. (Primate Red List Authority)

Justification:
This species is listed as Data Deficient in light of a complete lack of information on its distribution, ecology and threats. The type locality is unknown and the species is recently described. This species should be a priority for future research.

History:

2003

–

Least Concern (IUCN 2003)

Geographic Range [top]

Range Description:	Van Roosmalen et al. (2002) posited that C. stephennashi should occur along the right bank of the Rio Purús between the distributions of C. caligatus and C. dubius in Brazil. As a possible distribution, they suggested the interfluvium of the Rios Purús/Ipixuna/Madeira/Mucuím.
Countries:	Native: Brazil
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	There is no information on the population status of this species. It is known from only four specimens kept in captivity and has not been seen or studied in the wild.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	No data on the ecology of this species are available. Titi monkeys (Callicebus spp.) are known to occur in a wide range of habitats, although some species exhibit habitat preferences, for example C. lucifer is reported to prefer white-sand forests (E. Heymann pers. comm. 2008), and C. donacophilus drier forests (Ferrari et al. 2000; R. Wallace pers. comm.). Members of the C. moloch and C. cupreus groups are considered tolerant of habitat disturbance caused by human activity or seasonal flooding (van Roosmalen et al. 2002). The diet of titis comprises mainly fruit pulp, leaves, insects and seeds. They form small, pair-bonded, territorial groups and are considered monogamous. They have small home (1.5-30 km) and day ranges (0.5-1.5 km).
Systems:	Terrestrial

Habitat and Ecology:

No data on the ecology of this species are available. Titi monkeys (Callicebus spp.) are known to occur in a wide range of habitats, although some species exhibit habitat preferences, for example C. lucifer is reported to prefer white-sand forests (E. Heymann pers. comm. 2008), and C. donacophilus drier forests (Ferrari et al. 2000; R. Wallace pers. comm.). Members of the C. moloch and C. cupreus groups are considered tolerant of habitat disturbance caused by human activity or seasonal flooding (van Roosmalen et al. 2002).

The diet of titis comprises mainly fruit pulp, leaves, insects and seeds. They form small, pair-bonded, territorial groups and are considered monogamous. They have small home (1.5-30 km) and day ranges (0.5-1.5 km).

Systems:

Terrestrial

Threats [top]

Major Threat(s):	There is no information on major threats to this species.

Major Threat(s):

There is no information on major threats to this species.

Conservation Actions [top]

Conservation Actions:	It is not known whether the species occurs in any protected areas. It is listed on CITES Appendix II.

Conservation Actions:

It is not known whether the species occurs in any protected areas.
It is listed on CITES Appendix II.

Bibliography [top]

	Groves, C. P. 2001. Primate taxonomy. Smithsonian Institution Press, Washington, DC, USA. Hershkovitz, P. 1988. Origin, speciation, and distribution of South American titi monkeys, genus Callicebus (Family Cebidae, Platyrrhini). Proceedings of the Academy of Natural Sciences of Philadelphia 140(1): 240-272. Hershkovitz, P. 1990. Titis, New World monkeys of the genus Callicebus (Cebidae, Platyrrhini): a preliminary taxonomic review. Fieldiana: Zoology 55: 1-109. Kobayashi, S. 1995. A phylogenetic study of titi monkeys, genus Callicebus, based on cranial measurements: I. Phyletic groups of Callicebus. Primates 36(1): 101-120. Norconk, M. A. 2007. Saki, uakaris, and titi monkeys: behavioral diversity in a radiation of primate seed predators. In: C. J. Campbell, A. Fuentes, K. C.MacKinnon, M. Panger and S. K. Bearder (eds), Primates in Perspectives, pp. 123-138. Oxford University Press, New York, USA. Van Roosmalen, M. G. M., Van Roosmalen, T. and Mittermeier, R.A. 2002. A taxonomic review of the titi monkeys, genus Callicebus Thomas, 1903, with the description of two new species, Callicebus bernhardi and Callicebus stephennashi, from Brazilian Amazonia. Neotropical Primates 10: 1-52.

Groves, C. P. 2001. Primate taxonomy. Smithsonian Institution Press, Washington, DC, USA.

Hershkovitz, P. 1988. Origin, speciation, and distribution of South American titi monkeys, genus Callicebus (Family Cebidae, Platyrrhini). Proceedings of the Academy of Natural Sciences of Philadelphia 140(1): 240-272.

Hershkovitz, P. 1990. Titis, New World monkeys of the genus Callicebus (Cebidae, Platyrrhini): a preliminary taxonomic review. Fieldiana: Zoology 55: 1-109.

Kobayashi, S. 1995. A phylogenetic study of titi monkeys, genus Callicebus, based on cranial measurements: I. Phyletic groups of Callicebus. Primates 36(1): 101-120.

Norconk, M. A. 2007. Saki, uakaris, and titi monkeys: behavioral diversity in a radiation of primate seed predators. In: C. J. Campbell, A. Fuentes, K. C.MacKinnon, M. Panger and S. K. Bearder (eds), Primates in Perspectives, pp. 123-138. Oxford University Press, New York, USA.

Van Roosmalen, M. G. M., Van Roosmalen, T. and Mittermeier, R.A. 2002. A taxonomic review of the titi monkeys, genus Callicebus Thomas, 1903, with the description of two new species, Callicebus bernhardi and Callicebus stephennashi, from Brazilian Amazonia. Neotropical Primates 10: 1-52.

Citation:	Veiga, L.M. 2008. Callicebus stephennashi. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 10 February 2012.
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