Slender loris

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Slender lorises
Slender Loris.jpg
Gray slender loris (Loris lydekkerianus)
CITES Appendix II (CITES)[2]
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Strepsirrhini
Family: Lorisidae
Subfamily: Lorinae
Genus: Loris
É. Geoffroy, 1796[1]
Type species
Loris tardigradus
  • Stenops Illiger, 1811
  • Tardigradus Boddaert, 1785

Slender lorises (Loris) are a genus of loris native to India and Sri Lanka.The slender loris spends most of its life in trees (arboreal), traveling along the top of branches with slow and precise movements .It is found in tropical rainforests, scrub forest, semi deciduous forest and swamps. The species have lifespans of 15 years and are nocturnal. Slender lorises generally feed on insects, reptiles, shoots of plants and fruits. Locally, they are known as Devanga Pilli ("దేవాంగ పిల్లి") in Telugu, kaadu paapa ("ಕಾಡು ಪಾಪ") in Kannada, kutti thevangu ("தேவாங்கு" தே(தெய்வ) வா(வாக்கு) விலங்கு(ங்கு) )in Tamil and Malayalam, and unahapuluwa ("උනහපුළුවා") in Sri Lanka, and "Lajwanti" (लाजवंती) in Marathi.


There are two known species:

Image Scientific name Common Name Distribution
Sri Lankan Slender Loris 2.jpg Loris tardigradus Red slender loris Sri Lanka.
Slender Loris.jpg Loris lydekkerianus[3] Gray slender loris India and Sri Lanka


According to biologists, poaching activity has led to the steady decline of the species in Tamil Nadu. Native people have always believed that all parts of the slender loris have some medicinal or magical powers[citation needed]. This has contributed greatly to the decline of the slender loris. In addition, slender lorises are illegally smuggled to supply a growing exotic pet trade.[4] Along the western region of Tamil Nadu, there is a vigorous clampdown on illegal poaching of slender lorises.[5]

Destruction of tropical rain forest habitat is also contributing to declines in population.[6]



The red slender loris favors lowland rainforests (up to 700 m in altitude), tropical rainforests and inter-monsoon forests of the south western wet-zone of Sri Lanka. Masmullah Proposed Forest Reserve harbors one of few remaining red slender loris populations, and is considered a biodiversity hotspot. The most common plant species eaten was Humboldtia laurifolia, occurring at 676 trees/ha, with overall density at 1077 trees/ha. H. laurifolia is vulnerable and has a mutualistic relationship with ants, providing abundant food for lorises.[5] Reports from the 1960s suggest that it once also occurred in the coastal zone, however it is now thought to be extinct there.[7]

The red slender loris differ from its close relative the gray slender loris in its frequent use of rapid arboreal locomotion. It forms small social groups, containing adults of both sexes as well as young animals. This species is among the most social of the nocturnal primates. During daylight hours the animals sleep in groups in branch tangles, or curled up on a branch with their heads between their legs. The groups also undertake mutual grooming and play at wrestling. The adults typically hunt separately during the night. They are primarily insectivorous but also eat bird eggs, berries, leaves, buds and occasionally invertebrates as well as geckos and lizards. To maximize protein and nutrient uptake they consume every part of their prey, including the scales and bones. They make nests out of leaves or find hollows of trees or a similar secure place to live in.[7]


  1. ^ Groves, C.P. (2005). Wilson, D.E.; Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. p. 122. ISBN 0-801-88221-4. OCLC 62265494.
  2. ^ "Checklist of CITES Species". CITES. UNEP-WCMC. Retrieved 18 March 2015.
  3. ^ Loris and potto subspecies - data reviews
  4. ^ "Men arrested hiding loris in underwear at Delhi airport". BBC News. 10 September 2012.
  5. ^ "Saving the Loris". Archived from the original on 12 April 2012. Retrieved 21 May 2013.
  6. ^ "Slender loris". April 2012. Archived from the original on 2013-04-20. Retrieved 2012-11-29.
  7. ^ a b "Slender loris - Introspective World". Retrieved 2016-07-17.