Taxon name
Semnopithecus entellus
(Dufresne, 1797)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Semnopithecus entellus
(Dufresne, 1797)
Common name(s)
Northern Plains Sacred Langur, Common Langur, Hanuman
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Mammals
Species authority
(Dufresne, 1797)
Taxonomic notes and synonyms listed
Semnopithecus entellus (Dufresne, 1797) subspecies entellus.
Simia fascicularis Raffles, 1821; Simia aygula Linnaeus, 1758; Simia cynomolgus Schreber, 1775; Macacus carbonarius Cuvier, 1825; Macaca aureus Geoffroy, 1826
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
Criteria system used
IUCN
(see Assessment details)
Assessment rationale/justification
The population of this species is known to have been decreased. Although, Gittins and Akonda (1982) estimated only 100 individuals in Bangladesh. Khan 1987 considered the total population of Hanuman in Bangladesh to be between 250 and 300 individuals considering all ages. Khan and Ahsan (1986) reported 89 individuals in 8 groups in Jessore. Khatun (2012) reported 246 individuals at six villages of Keshabpur under Jessore District. Currently, approximately 204 individuals have been observed in at 11 groups distributed in Keshabpur and Monirampur Upazilas under the same district (Anon 2015, unpublished report), though the total population is not more than 250 individuals occurring in all districts. The number of mature individuals in total population could be slightly more than 140. The Extent of Occurrence of this species is more than 100 km2 but below 5,000 km2. Actual Area of Occupancy is above 10 km2. Since male migration has been occurring, all groups together can be considered as single population.
Assessment details
Assessors/contributors/reviewers listed
Mohammad Firoj Jaman
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 occurs in south western Bangladesh and eastern India (in Andhra Pradesh, Bihar, Chattisgarh, Jharkhand, Madhya Pradesh, Maharashtra, Orissa, and West Bengal) and also occurs in Nepal (Chetri et al. 2006). The Bangladesh population is very likely to have originated from a single pair introduced by Hindu pilgrims on the bank of the River Jalangi (Mitra and Molur 2008). This is the only non-human primate species of Bangladesh that does not occur in any of the three forest types the country have. It occurs in south western Bangladesh mainly in Jessore District (Keshabpur and Manirampur upazillas), while few troops have been established in Faridpur, Meherpur, Jhinaidaha and Satkhira Districts.
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
It is found in a wide variety of habitats covering only human habitations and agricultural lands.This species is mainly terrestrial, folivorous, and diurnal.
History
Critically 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
