- Common Names: Hooded leaf monkey, Black-leaf monkey, John’s langur, and Indian hooded leaf monkey
- Taxonomy Classification Year: 1829
- Monkey Size: 58 to 80 cm (22.83 to 31.50 in)
- Skin Color(s): Black
- Habitat: Forest, mountains
- Diet: Omnivorous
- Native Countries: India
Hooded leaf monkey Distribution
Nilgiri Langur Characteristics
The Nilgiri langur (Semnopithecus johnii), also called the black-leaf monkey, John’s langur, and Indian hooded leaf monkey is a langur (a species of Old-World monkey) found in the Nilgiri foothills of the Western Ghats in southern India.
- These langurs’ range also includes Kodagu in Karnataka, Kodayar Hills in Tamil Nadu, and many other mountainous regions of Tamil Nadu and Kerala.
- Nilgiri langurs have a glossy black coat with a reddish brown to golden head. Newborns are reddish-brown until ten weeks of age when they take on the color of adults.
- Like purple-faced langurs, Nilgiri langurs have dark faces and white whiskers. In addition, female species have white patches on their thighs that distinguish them from male species.
- Nilgiri langurs are sexually dimorphic, with males being slightly larger than females.
Nilgiri Langur Facts
- Generally, Nilgiri langurs live in small groups centered around females. These groups can consist of one male and several females, several males and several females, or one or more solitary males.
- At the peak of its activity, it alternates between the feeding and resting phases.
- They exhibit subtle dominance hierarchies. Within each group, there are two dominance structures, one for males and one for females.
- Nilgiri langurs show territorial behavior when confronted with other species groups. This territorial defense directly involves a single adult male from each group.
- Nilgiri langurs communicate primarily through vocalization. Vocal communication is observed during the maintenance of social hierarchy, in territorial conflicts, in the context of female-female conflicts within the group, and finally, during male interventions in these conflicts.
Suggested Reading: Monkey Species List
Cite This Page
BioExplorer.net. (2023, March 27). Nilgiri Langur. Bio Explorer. https://www.bioexplorer.net/animals/mammals/monkeys/nilgiri-langur/.
BioExplorer.net. "Nilgiri Langur" Bio Explorer, 27 March 2023, https://www.bioexplorer.net/animals/mammals/monkeys/nilgiri-langur/.
BioExplorer.net. "Nilgiri Langur" Bio Explorer, March 27 2023. https://www.bioexplorer.net/animals/mammals/monkeys/nilgiri-langur/.