Roosmalens' dwarf marmoset

The Black Crown marmoset ( Callithrix humilis or Calli Bella humilis ) is a primate of the family of marmosets ( Callitrichidae ).

Features

Black Crown marmosets reach a body length 16-17 cm, a tail length of 21-23 centimeters and a weight of 150 to 190 grams. They are thus in accordance with the pygmy marmoset is the second smallest marmosets and thus the second smallest monkeys.

Their fur is colored olive brown on the back, the belly is golden yellow to yellow gray, hands and outer sides of the legs are colored orange and the long tail black. Named giving feature is a black mop of hair on the head, ears and face are largely hairless. There are white eyebrows above the eyes.

Distribution and habitat

Black Crown marmosets inhabit a small area in the Brazilian state of Amazonas between the Rio Madeira and the Rio Aripuanã. Their habitat are rainforests, often they are found in secondary forests and the forest, they can also plantations and gardens occur.

Lifestyle and diet

These primates, like all marmosets diurnal and spend most of their lives on the trees. They live in groups of six to eight animals, sometimes they will also respond to larger groups of up to 30 animals together. Unlike other marmosets they are not territorial.

Like all marmosets they are thanks to the specialized teeth in the lower jaw in a position to gnaw holes in the bark, so as to get to the tree sap, one of their main food sources. In addition, they also eat insects and other small animals and on the seasonal fruits.

Reproduction

In contrast to the other marmosets several females in a group and not only the dominant propagate at the Black Crown marmoset. Also outweigh single births and known by other common marmoset caring for the young animals was not observed in them - only the mother carries it.

Threat

Due to its small distribution area that is not protected, the type of the IUCN ( vulnerable ) is "at risk" as listed. However, the species is very adaptable and there are no known incidents. The total population was estimated at around 10,000 animals in 2003.

System

The species was first described in 1998 by Marc van Roosmalen, after he had obtained from a river traders a milk jug with a monkey in it and the animal recognized as a new species. First, she was assigned to the marmoset ( Mico ), 2003 was created due to differences in physique and way of life the distinct genus Calli Bella for the type.

Today, the Black Crown Marmoset either in the genre of the marmoset ( Callithrix humilis as ) is expected or forms the only member of the genus Calli Bella (as Calli Bella humilis ). If the Marmoset be included in the genus Callithrix, however this is paraphyletic without the Black Crown marmoset.