Macaca silenus Linnaeus, 1758 - Lion-tailed Macaque
This species is listed as Endangered in the IUCN Red List of Threatened Species (https://www.iucnredlist.org/).
Macaca fascicularis Raffles, 1821 - Long-tailed Macaque
It is also known as Crab-eating Macaque. There are 10 subspecies so far recognized under M. fascicularis out of which M. f. umbrosus is distributed on Nicobar islands whereas rest all are extralimital. M. f. umbrosus is known as Nicobar Long-tailed/Nicobar Crab-eating Macaque or Nicobar Monkey.
Macaca munzala Sinha, Datta, Madhusudhan & Mishra , 2005 - Arunachal Macaque
Arunachal Macaque is the most recently described primate species of India. It was once thought to be a new subspecies of Tibetan Macaque (Macaca thibetana) but now recognized as a distinct species. Nevertheless, some researchers still suggest this to be a subspecies of Assam Macaque (M. assamensis). As of now it is treated as a distinct species.
Loris lydekkerianus Cabrera, 1908 - Slender Loris
This species was considered to be a subspecies under Red Slender Loris Loris tardigradus once but now it is recognised as a distinct and separate species. Grey Slender Loris is endemic to southern India and Sri Lanka. Out of its four subspecies Mysore Slender Loris L. l. lydekkerianus and Malabar Slender L. l. malabaricus are endemic to S. India whereas L. l. nordicus and L. l. grandis are endemic to Sri Lanka.
Nycticebus bengalensis Lacépède, 1800 - Bengal Slow Loris
Bengal Slow Loris is also known as Northern Slow Loris.
Hoolock leuconedys Groves, 1967 - Eastern Hoolock Gibbon
This species is listed as Vulnerable in IUCN Red List of Threatened Species (https://www.iucnredlist.org/).
Hoolock hoolock Harlan, 1834 - Western Hoolock Gibbon
This species is listed as Endangered in the IUCN RedList of Threatened Species (https://www.iucnredlist.org/).