The Marca's marmoset (''Mico marcai'') is a species of

marmoset The marmosets (), also known as zaris or sagoin, are twenty-two New World monkey species of the genera '' Callithrix'', '' Cebuella'', '' Callibella'', and ''Mico''. All four genera are part of the biological family Callitrichidae. The term ...

that is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the

Amazon Amazon most often refers to: * Amazon River, in South America * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon (company), an American multinational technology company * Amazons, a tribe of female warriors in Greek myth ...

, in the Aripuanã- Manicoré interfluvium in

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

. Its body is light grey, with orange legs, a black tail, a pinkish face, and naked ears. It is about long, excluding the tail, and it has a long tail. It weighs about . It was previously thought to be virtually unknown; in 2008 the

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

noted that it had never been seen in the wild, though it has been observed since then. However, later studies found the Manicore marmoset (''Mico manicorensis''), discovered in the

Campos Amazônicos National Park The Campos Amazônicos National Park () is a National park in the states of Rondônia, Amazonas and Mato Grosso, Brazil. Location The Campos Amazônicos National Park covers parts of the municipalities of Novo Aripuanã (66.69%), Manicoré ( ...

in 2000, to be conspecific with ''M. marcai,'' and thus both were synonymized.

References

Mico (genus) Primates of Brazil Endemic mammals of Brazil Mammals described in 1993 {{newworld-monkey-stub