Taxon name
Trachypithecus pileatus
(Blyth, 1843)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Trachypithecus pileatus
(Blyth, 1843)
Common name(s)
Capped Langur, Capped Leaf Monkey, Capped Monkey, Mukhpora Hanuman, Lalchey Hanuman
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Mammals
Species authority
(Blyth, 1843)
Taxonomic notes and synonyms listed
Four subspecies are currently recognized, although their validity is in some doubt (it is thought that seasonal variation in pelage color may account for at least some of the variation) Das et al. 2008. Of these, only two subspecies viz. T. p. durga and T
Simia pileata Shaw, 1800; Macacus sinicus Kelaart, 1852; Macacus pileatus Blyth, 1863; Presbytis pileatus Blyth, 1843
Location and scope
Specific locality or subnational name or regional name
Bangladesh
Scope (of the Assessment)
National
Countries included within the scope of the assessment
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Critically Endangered
Criteria system used
IUCN
(see Assessment details)
Assessment rationale/justification
This species has been categorized as Endangered in view of the decline in of 50% of its Extent of Occurrence and Area of Occupancy and habitat quality over three generations. Moreover, there exist less than 250 individuals in each subpopulation.
Assessment details
Assessors/contributors/reviewers listed
Md. Mofizul Kabir
Criteria system used
IUCN
Reference for methods given
IUCN (2012) IUCN Red List Categories and Criteria: Version 3.1. Second edition. Gland, Switzerland and Cambridge, UK: IUCN. iv + 32pp; IUCN (2012) Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
URL (link) of redlist assessment or publication
http://iucnredlistbd.org/
Further information
Endemism (according to assessment)
Taxon distribution as listed in assessment
This species is found in Bangladesh, Bhutan, India and Myanmar (Das et al. 2008). Of the three species of Langurs, this species has the widest distribution. It occurs in all forest ecosystems, barring the Sundarbans which never had any of the primates but the Rhesus Macaque. In the early 1970s and 1980s it occurred in Gazipur District to Jamalpur, Sherpur, Netrokona and Mymensingh under Dhaka Division to the forests in Sylhet and Chittagong Revenue Divisions. At the current time it has just a handful specimens left in Mymensingh Division when rests are present in the mixed evergreen forests of Sylhet and Chittagong Divisions (Khan 1981, 2015).
Is there a map available in assessment?
Yes, in the publication/on website
Habitat and systems
Ecological system type
Habitat
Habitat details as listed in assessment
This species is found in the dense forest and bamboo patches of both moist deciduous and mixed evergreen forests. It generally prefers middle canopy, but also uses the top and lower canopy of the forests. It also uses forest floor for feeding and moving. This species is diurnal and predominantly arboreal. It lives in single male multi-female groups and group size varies from 2 to 15 Langurs. It is mainly folivorous and the food supplemented by fruits, flowers and nectar. It drinks water from water accumulated in tree trunks and rarely from a ground level water body. It often sits and forages in trees along the bridle paths and roads passing through a forest.
History
Endangered in Bangladesh (IUCN Bangladesh 2000).
Publication
IUCN Bangladesh. 2015. Red List of Bangladesh Volume 2: Mammals. IUCN, International Union for Conservation of Nature, Bangladesh Country Office, Dhaka, Bangladesh, pp. xvi+232
