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| Subspecies:
| Unknown |
| Est. World Population: |
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| CITES Status: |
NOT LISTED |
| IUCN Status: |
Endangered |
| U.S. ESA Status: |
NOT LISTED |
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| Body Length: |
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| Tail Length: |
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| Shoulder Height: |
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| Weight: |
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| Top Speed: |
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| Jumping Ability: |
(Horizontal) |
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| Life Span: |
in the Wild |
| Life Span: |
in Captivity |
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| Sexual Maturity: |
(Females) |
| Sexual Maturity: |
(Males) |
| Litter Size: |
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| Gestation Period: |
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Habitat:
This species is found in primary, secondary and riverine lowland moist forest, semi-deciduous forest, and in swamp forest (Oates 2011). The secondary forest it inhabits includes seasonally-inundated forest (e.g., Eggua Royal Forest and Bola Camp in Nigeria; Lama Forest) and wetland forest (e.g., Togbota Forest, Benin) (Matsuda Goodwin 2007, pers. obs. 2015). The habitat of this species in Togodo Forest in Togo is mainly the relic forest dominated by large trees and lianas (Segniagbeto et al. 2017, 2018). The average group size is 5-9.6 in Benin (Campbell 2005, Kassa 2001, Matsuda Goodwin 2007), but was 10-20 (range 10-30) in southwestern Nigeria in the 1980s (Oates 1985); a more recent study in Okomu National Park, Nigeria by Akinsorotan et al. (2011) reported a smaller group size of 5-6. This species forms one-male multi-female groups. It is often
Range:
This species occurs in scattered populations in isolated forest patches in southwestern Nigeria and the Niger Delta, in southern Benin perhaps as far as Banon at 8°29' N (Campbell et al. 2008), and in the Togodo Faunal Reserve and Godjin-Godjè sacred forest in Togo (Segniagbeto et al. 2017, 2018). In the Niger Delta, this species reaches east of the Orashi River where it has a narrow zone of hybridization and overlap with Sclater’s Guenon (Cercopithecus sclateri) (Oates 2011). There are two subspecies: C. e. erythrogaster ranges from the southwestern-most corner of Nigeria close to the Nigeria-Benin border (Matsuda Goodwin et al. 2017a), southern Benin including the Lama Classified Forest (Fôret Classée), Lokoli, Bonou, and Togbota Forests (Nobimè et al. 2011), and in the Togodo National Park and Godjin-Godjè sacred forest in eastern Togo (Segniagbeto et al. 2017, 2018). Cercopithecus e. pococki is found only in the forest zone of southwestern Nigeria and in the Niger Delta. The boundary between the two subspecies and the extent of any admixture between them is unclear, and may now be difficult to determine given intensifying agriculture and expanding urbanization in the far southwestern corner of Nigeria where their populations meet.
Conservation:
Only a handful of Protected Areas harbour this species: In Nigeria, Okomu National Park, Ise Forest Reserve, Idanre Forest Reserve, Omo Forest Reserve, Oluwa Forest Reserve, Shasha Forest Reserve, Akure-Ofosu Forest Reserve, and the Akure Forest Reserve; in Benin, the Lama Forest and in Togo, Togodo National Park. This species is listed on Appendix II of CITES and Class A of the African Convention on the Conservation of Nature and Natural Resources. Within the distribution range of this species, forested areas have been either converted to agricultural lands or plantations and much of the remaining forests are fragmented and degraded. Throughout its distribution range, uncontrolled hunting – nowadays hunters’ groups organize large-scale hunting parties via social media on their cell phones to go hunting for any moving animals they can hunt (R. Matsuda Goodwin pers. obs. 2018 in Nigeria). In the southwestern edge of Nigeria, larger-bodied primates like the mangabey and the white-thighed colobus have already gone locally extinct so that smaller-bodied primates are increasingly hunted for meat, although its secretive nature and the preference for liana tangles provide it with some protection (Oates 1985). To protect the species. We recommend strengthening anti-poaching law enforcement in the protected areas in all three habitat countries and also the Lama Forest be elevated to the National Park status and financial assistance be provided.
This species is listed on Appendix II of CITES and on Class A of the African Convention on the Conservation of Nature and Natural Resources.
