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Colobus angolensis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA PRIMATES CERCOPITHECIDAE

Scientific Name: Colobus angolensis
Species Authority: P. Sclater, 1860
Infra-specific Taxa Assessed:
Common Name(s):
English Angola Colobus, Angolan Colobus, Angolan Black-and-white Colobus
French Colobe
Taxonomic Notes: Grubb et al. (2003) and Groves (2001, 2005) recognize six subspecies (with one undescribed ssp from the Mahale Mountains in Tanzania): C. a. angolensis Sclater’s Angola Colobus; C. a. cordieri Cordier’s Angola Colobus; C. a. cottoni Powell-Cotton’s Angola Colobus; C. a. palliatus Peters’ Angola Colobus; C. a. prigoginei Prigogine’s Angola Colobus; and C. a. ruwenzorii Adolf Friedrichs’s Angola Colobus.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Kingdon, J., Struhsaker, T., Oates, J.F., Hart, J., Butynski, T.M., De Jong, Y. & Groves, C.P.
Reviewer(s): Mittermeier, R.A. & Rylands, A.B. (Primate Red List Authority)
Justification:
Listed as Least Concern as although locally threatened from habitat loss and hunting in some parts of its range, particularly in eastern Africa and the Albertine Rift, they remain widespread and relatively common, and do not seem to be declining fast enough to warrant listing in a higher category of threat.

Geographic Range [top]

Range Description: This species ranges from northern Angola north to the Congo-Oubangui river system, and then eastwards (with a disjunct range) to the montane and coastal forests of Tanzania and Kenya. Recorded to 2,415 m asl in Kenya (Anderson et al. 2007).

There are six described subspecies.

C. a. angolensis ranges from Angola north to the great bend of the Congo River.

C. a. cottoni occurs from north-east of the River Congo, east to Lake Albert and north to the Uele-Oubangui river system (this subspecies forms a hybrid zone with C. a. ruwenzorii in the south of its range).

The subspecies C. a. ruwenzorii ranges along both sides of the western Rift, from the Semiliki Valley and the Rwenzori Mountains through south-eastern Uganda, Rwanda, Mount Kahuzi (Democratic Republic of the Congo) and Burundi to the eastern shores of Lake Tanganyika in Tanzania.

C. a. cordieri is present in the Democratic Republic of the Congo where it occurs between the Lowa and Luama rivers from the Lualaba River in the west to close to Lake Kivu in the east, where it forms a hybrid zone with C. a. ruwenzorii.

The subspecies C. a. prigoginei is endemic to Mount Kabobo, in the eastern Democratic Republic of the Congo.

The eastern subspecies, C. a. palliatus, is discontinously distributed in the Southern Highlands and coastal and gallery forests of southern and eastern Tanzania and south-eastern Kenya. Kenyan distribution of C. a. palliatus is solely restricted to the southern coastal forests of the Kwale District (Anderson et al. 2007).

An isolated, undescribed subspecies is present on Mount Nkungwe and adjacent uplands in the Mahale Mountains of western Tanzania.
Countries:
Native:
Angola (Angola); Burundi; Congo, The Democratic Republic of the; Kenya; Malawi; Mozambique; Rwanda; Tanzania, United Republic of; Uganda; Zambia
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This widespread species can be common in suitable habitat. Their populations in the eastern part of the range are much more fragmented than the populations across the Congo basin. In a recent comprehensive survey of the Kenyan range of the species, a total of 55 colobus populations were located, with the total Kenyan C. a. palliatus population estimated at between 3,100 and 5,000 individuals (560–900 groups). The density of C. a. palliatus in Shimba Hills forest, the largest population, was 15 individuals/km², and the total population size was thus estimated at ca. 2,400 individuals (Anderson et al. 2007).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This largely arboreal species occurs in both lowland and montane primary and gallery forests. It is generally found in small family groups, but temporary aggregations of up to 300 animals have been reported. The eastern Colobus a. palliatus is a folivorous primate confined to the forests of Tanzania and southern Kenya (Kingdon 1997), and is forest-dependent primate.
Systems: Terrestrial

Threats [top]

Major Threat(s): This species is threatened in parts of its range by habitat loss through deforestation for timber and conversion of land to agricultural use. Isolated populations, such as those in the Eastern Arc and coastal forests, are especially vulnerable (see Anderson et al. 2007 for further detail on C. angolensis palliatus). It is hunted for meat, especially in the Congo Basin.

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix II of CITES and on Class B of the African Convention on the Conservation of Nature and Natural Resources. This species is present in a number of protected areas across its range, including Salonga National Park (Democratic Republic of the Congo), Virunga National Park (DR Congo), Nyungwe National Park (Rwanda), and Kaya Gonja and the Shimba Hills National Reserve (Kenya).

Citation: Kingdon, J., Struhsaker, T., Oates, J.F., Hart, J., Butynski, T.M., De Jong, Y. & Groves, C.P. 2008. Colobus angolensis. The IUCN Red List of Threatened Species. Version 2014.1. <www.iucnredlist.org>. Downloaded on 22 July 2014.
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