15 September 2009 - Bigodi Wetland Sanctuary, next to Kibale National Park, Uganda

L'Hoest's Monkey or Mountain Monkey / L'Hoëstmeerkat of Bergmeerkat (Cercopithecus lhoesti).

For those who like the biological details:
Click a link and you'll go to the Flickr photo page for that rank in the biological classification.

Phylum: Chordata; Vertebrates / Gewervelden
Class: Mammalia; Mammals / Zoogdieren
Order: Primates; Primates / Primaten
Suborder: Haplorrhini; Tarsiers, Monkeys and Apes / Apen en Spookdieren
Infraorder: Simiiformes; Simians / Apen
Parvorder: Catarrhini; Old World Monkeys and Apes / Smalneusapen
Superfamily: Cercopithecoidea; Old World Monkeys / Apen van de Oude Wereld
Family: Cercopithecidae; Old World Monkeys / Apen van de Oude Wereld
Subfamily: Cercopithecinae; Baboons, Macaques and Vervet Monkeys / Meerkatachtigen
Genus: Cercopithecus; Guenon Monkeys / Echte Meerkatten
Species: Cercopithecus lhoesti; L'Hoest's Monkey or Mountain Monkey / L'Hoëstmeerkat of Bergmeerkat

Read the blog about this monkey and the photos: wildlifespotting.blogspot.com/2010/09/lhoest-mogelijk.html (in Dutch)