Slow lorises are a group of five species of strepsirrhine primates, which make up the genus Nycticebus. Found in South and Southeast Asia, they range from Bangladesh and Northeast India in the west to the Philippines in the east, and from the Yunnan province in China in the north to the island of Java in the south. Although many previous classifications recognized fewer species, five are now considered valid: the Sunda slow loris (N. coucang), Bengal slow loris (N. bengalensis), pygmy slow loris (N. pygmaeus), Javan slow loris (N. javanicus), and Bornean slow loris (N. menagensis). (Wiens 2002). All of these five speices are now enlisted as the top 25 endangered primates on the ICUN redlist.
Taxonomy, Physical Characteristics & Locomotion
| Common name
| Slow loris
In general, they have a whitish strip between the eyes, starting from the forehead and continuing until the end of the nose. The head is round and the ears are hidden in thick fur. The tail is reduced to a stump and is also hidden in the fur. They have large eyes. Their arms and legs are nearly equal in length, and their trunk is long, allowing them to twist and extend to nearby branches. The hands and feet of slow lorises have several adaptations that give them a pincer-like grip and enable them to grasp branches for long periods of time. Overall, N. pygmaeus is dull reddish, medium to dark brown and gray-brown with very thick fur, and is darker dorsally than ventrally. It is also important to remember however, that there are seasonal changes in pelage coloration in N. pygmaeus. Slow lorises have glands on their elbows that secrete a strong-smelling liquid used in communication. (Madison). The slow loris bright orange ‘eye-shine’, i.e. the reflection of incident light from a powerful light-source like a strong torchlight from the...
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