Allochrocebus lhoesti
Silhouette: PhyloPic
In 3 days >90%
L'Hoest's monkey (Allochrocebus lhoesti), also known as the mountain monkey, is a guenon found in the upper eastern Congo Basin. They mostly live in mountainous forest areas in small, female-dominated groups. They have a dark coat and can be distinguished by a characteristic white beard.
Philip Lutley Sclater originally gave the specific name Cercopithecus lhoesti in honor of François L'Hoëst, director of the Antwerp Zoo, in 1898. L'Hoest's monkey is currently classified as a member of the genus Allochrocebus. Formerly, L'Hoest's monkey included the taxon preussi from the Gulf of Guinea region as a subspecies, but it is now considered a separate species, Preuss's monkey (A. preussi).
L'Hoest's monkey was formerly included in the genus Cercopithecus. Molecular studies published by Anthony Tosi in 2003 had raised doubts about the classification of L'Hoest's monkey as a member of the genus Cercopithecus. The studies indicated that L'Hoest's monkey (along with the others in its species group) is more closely related to the vervet monkeys of the genus Chlorocebus and the patas monkey (genus Erythrocebus) than to the other guenons of the genus Cercopithecus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nyungwe National Park | 🇷🇼 Rwanda | |
| 2 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 3 | Kibale National Park | 🇺🇬 Uganda |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Aquarium de Lyon | 🇫🇷 France | |
| 2 | Parco Natura Viva | 🇮🇹 Italy | |
| 3 | Nanning Zoo | 🇨🇳 China | |
| 4 | Colchester Zoo | 🇬🇧 United Kingdom | |
| 5 | Edinburgh Zoo | 🇬🇧 United Kingdom | |
| 6 | Twycross Zoo | 🇬🇧 United Kingdom | |
| 7 | Parken Zoo | 🇸🇪 Sweden | |
| 8 | Apenheul Primate Park | 🇳🇱 Netherlands | |
| 9 | Monkey Town | 🇿🇦 South Africa | |
| 10 | Aquarium de Paris | 🇫🇷 France |
Very likely
About 80% of wildlife watchers report a L'Hoest's Guenon sighting in Nyungwe National Park on a given day, based on 86 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the most-seen of the 11 mammals we can rate there. Over three days the chance rises to over 90%, if each day is a fresh chance.
January–March, July and September–October
In those months about 90% of wildlife watchers report a L'Hoest's Guenon in Nyungwe National Park on a given day, against about 80% in April–June, August and November–December, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most L'Hoest's Guenon sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate L'Hoest's Guenon sightings, Nyungwe National Park has the highest daily chance: about 80%. Next come Bwindi Impenetrable National Park (Uganda, about 70%) and Kibale National Park (Uganda, about 30%).
Same family: Cercopithecidae
The closest relatives of the L'Hoest's Guenon that you can see in Nyungwe National Park (family Cercopithecidae, Old World Monkeys) are Blue Monkey (about 70%), Olive Baboon (about 60%) and Angola Colobus (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the L'Hoest's Guenon is recorded against all the mammals logged in Nyungwe National Park (86 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
