The dusky leaf monkey, Trachypithecus obscurus, also called the spectacled langur or spectacled leaf monkey, is a small, mostly leaf-eating primate of the family Cercopithecidae found in Peninsular Malaysia, Myanmar and Thailand, with a few animals occasionally seen in Singapore. It is born with an orange coat that changes as it matures, with lighter fur on the abdomen than on the back, which can be brown, black or grey, and bright white circles of fur around the eyes. In one study males averaged 7.39 kg and females 6.47 kg. During the day it divides into sub-groups to forage for vegetation and fruit in tropical forests, and it has no seasonal mating period. Seven subspecies are officially recognised. The IUCN classified it as endangered in 2015 because habitat loss, poaching and land use are shrinking its population, and road mortality is one of the more prominent threats.
Facts
Classification
Population Trend System (Realm) ThreatsTransportation and Service Corridors 2 ThreatsBiological Resource Use 2 Relationship to People Relationship to People Relationship to PeopleAgricultural or Structural Pest 2 Living or Extinct Conservation Status Body Size Band Activity Pattern Comparison
CITES Appendix Connections
Child Taxon Of
Source Dusky leaf monkey (Wikipedia)
In Biome
Source Animal Diversity Web: Dusky leaf monkey
In the Other Atlases
Found In
Also in Geography Atlas: where this subject is found.
Source Dusky leaf monkey (Wikipedia)Lead, living or extinctQuote, Lead, living or extinct
It is found in Peninsular Malaysia, Myanmar and Thailand
Also in Geography Atlas: where this subject is found.
Source Dusky leaf monkey (Wikipedia)Lead, living or extinctQuote, Lead, living or extinct
It is found in Peninsular Malaysia, Myanmar and Thailand
Also in Geography Atlas: where this subject is found.
Source Dusky leaf monkey (Wikipedia)Lead, living or extinctQuote, Lead, living or extinct
It is found in Peninsular Malaysia, Myanmar and Thailand
Sources
1. Animal Diversity Web: Dusky leaf monkey
Animal Diversity WebFood Habits, Primary Diet
herbivore
Conservation Status, CITES
Appendix II
Behavior, Key Behaviors
diurnal
In Biome: Tropical Rainforest, Habitat, Terrestrial Biomes
rainforest
View the Source 2. Dusky leaf monkey (Wikipedia)
Lead
which prompted the IUCN to classify the species as endangered in 2015
Lead, population trend
population is declining due to habitat loss, poaching, and anthropogenic land use
Conservation
The construction of roads within tropical forests has led to a large increase in road mortality
Conservation, threats
While the dusky leaf monkey is often killed for their meat
Conservation, relationship to people
they are considered agricultural pests across Southeast Asia
Conservation, relationship to people (2)
Infant dusky leaf monkeys are also hunted and sold as pets internationally.
Lead, living or extinct
It is found in Peninsular Malaysia, Myanmar and Thailand
Lead, system
During the day, these small, folivorous primates divide in sub-groups and forage for vegetation and fruit throughout the tropical forests.
View the Source3. GBIF (Global Biodiversity Information Facility): GBIF species record for Dusky leaf monkey
GBIF (Global Biodiversity Information Facility)Distributions, IUCN Red ListQuote, Distributions, IUCN Red List
[2].threatStatus: ENDANGERED
View the Source 4. AnAge (Human Ageing Genomic Resources): Dusky leaf monkey
AnAge (Human Ageing Genomic Resources)Life history traits (averages): Adult weight
7,080 g
Lifespan, ageing, and relevant traits: Maximum longevity
33.9 years (captivity)
View the Source Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.