The Status of Nepal's Mammals: The National Red List Series - IUCN

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and food.
The life history of this species is likely to be similar
to that of S. entellus, which has an average age at
first reproduction of about three and half years
producing a single young after a gestation period of
six months. Generation length of this species is 12
years.
Conservation Status
Global: Least Concern
National: Least Concern
Rationale for assessment: This species is considered
Least Concern as it is widely distributed across Nepal
and occurs within several protected areas.
Legal Status
CITES Appendix I
National Parks and Wildlife Conservation Act 2029
(1973). This species occurs within protected areas.
References
Curtin 1975, Curtin 1982, Ernst 2003, Molur et al. 2003, Baral and Shah 2008, Ganga Ram Regmi (pers. obs.)
2010, Nepal Red List of Mammals Field Technicians Workshop 2010.
DATA DEFICIENT
76) Semnopithecus ajax (Pocock, 1928)
Common Names
Himalayan Grey Langur (English); Paschima Langur
(Nepali)
Synonyms
Semnopithecus entellus ajax (Pocock, 1928)
Species Description
Black face, silver-grey fur, darker on forearms.
Identification of the three species of langur thought
to occur in Nepal is under debate.
Species Ecology
The Himalayan Grey Langur occurs in subtropical,
moist temperate, alpine, coniferous and
broadleaved forests at elevations of between
2,200 m to 4,000 m. This is a folivorous species.
The life history of this species is likely to be similar
National Population Size
The current population size of this species is not well
known.
National Distribution
This species has a range from the Himalayan slopes
as far west as Gorkha extending eastwards to Sikkim
and within the protected areas of Annapurna
Conservation Area, Kanchenjunga Conservation
Area, Langtang National Park, Manaslu National
Park, Sagarmatha National Park and Shivapuri-
Nagarjun National Park and district of Solukhumbu.
The langurs recorded west of Gorkha in the mid-hills
are also likely to be this species but this requires
further confirmation.
Distribution outside Nepal
Bhutan, China, India, Pakistan.
Main Threats
• Habitat Loss.
to that of Semnopithicus entellus, which has an
average age at first reproduction of about three and
half years producing a single young after a gestation
period of six months. The generation time of this
species is between 10 to 12 years.