||Cercopithecus hamlyni Pocock, 1907
||Owl-faced Monkey, Hamlyn’s Monkey, Owl-faced Guenon
||Cercopiteco de Hamlyn
Cercopithecus hamlyni ssp. kahuziensis Colyn & Rahm, 1987
||Mittermeier, R.A., Rylands, A.B. and Wilson D.E. 2013. Handbook of the Mammals of the World: Volume 3 Primates. Lynx Edicions, Barcelona.
||Two subspecies have been named (see Grubb et al. 2003, Grubb 2005): C. h. kahuziensis, which lacks a prominent white nose stripe, is reported to be restricted to a small part of the bamboo forest of Mount Kahuzi, Democratic Republic of the Congo; C. h. hamlyni is found throughout the remainder of the species' range. However, recent surveys in Kahuzi-Biega National Park identified C. h. hamlyni, which has a prominent white nose stripe, in areas reported to represent the range of C. h. kahuziensis. In addition, the nose stripe appears to be variably present in populations in the lowlands (Kaleme, Hart and Finch pers. comm.), and as such subspecies are not recognized here pending further investigation.
|Red List Category & Criteria:
||Hart, J. & Butynski, T.M.
||Mittermeier, R.A. & Rylands, A.B. (Primate Red List Authority)
Listed as Vulnerable as the species has undergone past declines and continues to do so. The entire range of the species is in a region of intense conflict, which has exacerbated the identified threats. It is expected that these declines will continue in the face of ongoing political climates, resulting in an overall population reduction of more than 30% over a 30-year time-frame (given a 10-year generation period).
|Previously published Red List assessments:|
- 1996 – Lower Risk/near threatened (LR/nt)
- 1994 – Vulnerable (V)
- 1990 – Vulnerable (V)
- 1988 – Vulnerable (V)
- 1988 – Vulnerable (V)
- 1986 – Insufficiently Known (K)
|Range Description:||This species ranges from the the eastern Democratic Republic of the Congo, where it is found in lowlands from the Congo/Lualaba River to the Ituri Forest and into the Albertine Rift and Nyungwe Forest in Rwanda. It occurs north to the Lindi-Nepoko river system and south to the southern tropical moist forest limit, where its range limit is poorly defined. Although it is generally a lowland species, it also occurs in the mountains of Albertine Rift, where many records come from the bamboo zone. The easternmost highland populations of C. hamlyni are now isolated in fragmented habitat islands and some have been extirpated (e.g., Gishwati, Rwanda, the Virunga Volcanos, and forest islands between Kahuzi-Biega National Park and Massisi). The species occurs above 3,000 m in both Tshiberimu and Kahuzi, so it seems safe to assume that 3,200 m is the upper elevation limit.|
Congo, The Democratic Republic of the; Rwanda
|♦ Upper elevation limit (metres):||3200|
|Range Map:||Click here to open the map viewer and explore range.|