Species Nasalis concolor (simakobu)
Nasalis larvatus (proboscis monkey)
Today’s primate is the proboscis monkey. The Simakobu, Nasalis concoor, was originally considered to be in a separate genus (Simias to be exact) will be discussed in a future post.
The proboscis monkey is mainly known because of it’s rather large and funny looking nose (when I was a kid we used to call it the Jimmy Durante monkey). They are diurnal animals that live in mangrove swamps and are adept swimmers (even having webbing between the digits, they can swim up to 20 meters underwater). They are also excellent leapers. The proboscis monkey is also the most sexually dimorphic of the colobines. Males range from 16-22 kg and get up to 70 cm in length. Females range from 7-12 kg and get up to 60 cm in length. Like most colobines, they are mainly folivorous (but switch to mainly fruit for several months) and have the same adaptations to eating leaves that other colobines have (i.e. bacteria in the stomach to help digest cellulose). They live in multimale or unimale groups – the multimale groups have up to 20 members.
There is also a blog devoted to them called the Proboscis Monkey Blog, which, unfortunately, doesn’t seem to have been updated in awhile.
As you can see from the above pictures, proboscis monkeys are magnificent looking animals, unfortunately, they are endangered due to habitat destruction…