Written by Syuhada Sapno
Photos by Syuhada Sapno & Nurul Fitrah Marican
Dusky langur, Lotong chengkong
Trachypithecus obscurus
Fur colour of adults is greyish brown, dark grey and sometimes blackish. Easily identifiable with a white ring-like shape around its eyes. Infants are pale yellow to orange in colour. Troop size ranges from 8 to 20 individuals.
Silvery langur, Lotong kelabu
Trachypithecus cristatus
Adult has dark grey fur with a silvery sheen, and black hands and feet. Its head has crested fur. Similar to dusky langurs, the infants are pale yellow to orange in colour.
Local name: Lotong cengkung, lotong chengkong, lutong bercelak
Activity pattern: Diurnal
Ecological function: Seed disperser
Level in food chain: Primary consumer, but sometimes seen feeding on insects
Feeding behaviour: Primarily folivorous – herbivores that feed on leaves
Food items: Young leaves, leaf shoots, fruits, flowers
Microhabitat: Inhabits a range of forest habitats. Sometimes seen in urban parks that are located close to forest edge
Local name: Lotong kelabu
Activity pattern: Diurnal
Ecological function: Seed disperser
Level in food chain: Primary consumer
Feeding behaviour: Primarily folivorous – herbivores that feed on leaves
Food items: Young and matured leaves, fruits, seeds, flowers
Microhabitat: Normally found at coastal and riverine habitats in Peninsular Malaysia
Urban Biodiversity Initiative (UBI) 