Callicebus dubius

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	MAMMALIA	PRIMATES	PITHECIIDAE

Scientific Name:

Callicebus dubius

Species Authority:

Hershkovitz, 1990

Common Name/s:

English

–

Doubtful Titi Monkey, Dubius Titi, Hershkovitz's Titi

Taxonomic Notes:

Kobayashi and Langguth (1999) and van Roosmalen et al. (2002) recognize five species groups – cupreus, donacophilus, moloch, personatus and torquatus. According to van Roosmalen et al. (2002), the cupreus group contains C. caligatus, C. cupreus, C. discolor, C. dubius, C. ornatus, and C. stephennashi.

Assessment Information [top]

Red List Category & Criteria:

Least Concern ver 3.1

Year Assessed:

2008

Assessor/s

Veiga, L.M.

Evaluator/s:

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

Justification:
This species is listed as Least Concern due to its relatively large range in a pristine region of the Amazon, and because there are no known major threats believed to be resulting in a decline sufficient to qualify it for listing in a threatened category.

History:

2003	–	Least Concern (IUCN 2003)
1996	–	Vulnerable

Geographic Range [top]

Range Description:	Callicebus dubius has a relatively large, but poorly known, range that includes parts of northern Bolivia, south-eastern Peru and three Brazilian states. It occurs south of the Rio Ituxí, or perhaps Rio Mucuím, both right bank tributaries of the Rio Purús, west to the Rio Purús; the southern limit is unknown. Van Roosmalen et al. (2002) placed C. dubius in northern Bolivia, but Rowe and Martinez (2003) found no evidence to support this supposition, and C. brunneus is the species in the Pando, north and south of the Río Madre de Dios (R. Wallace pers. comm.)
Countries:	Native: Bolivia; Brazil; Peru
Range Map:	(click map to view full version)

Population [top]

Population:	There is no information on the population status of this species.
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):	This species occurs in a remote isolated region of the Amazon, and is not considered to be under any immediate threat.

Major Threat(s):

This species occurs in a remote isolated region of the Amazon, and is not considered to be under any immediate threat.

Conservation Actions [top]

Conservation Actions:	This species is present in Caitutu and Kaxaraari Amerindian Reserves.

Conservation Actions:

This species is present in Caitutu and Kaxaraari Amerindian Reserves.

Citation:	Veiga, L.M. 2008. Callicebus dubius. In: IUCN 2009. IUCN Red List of Threatened Species. Version 2009.2. <www.iucnredlist.org>. Downloaded on 21 November 2009.
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