Black-crowned Dwarf Marmoset

Open encyclopedia reference

The Roosmalens' dwarf marmoset (Mico humilis), also known as the black-crowned dwarf marmoset, is a small New World monkey native to the Amazon rainforest, on the east bank of the lower Madeira River, and the west bank of the Aripuanã River, in Brazil. It has the smallest distribution of any primate in Amazonia. This marmoset has several unique attributes, which has resulted in it sometimes being placed in the monotypic genus Callibella. However, genetic analysis has subsequently resulted in its being classified within the genus Mico. It was first described in 1998, after it was discovered ca. 400 km (250 mi) south of the city of Manaus. In 1996, Marc van Roosmalen, the discoverer, was given a milk can by a river trader with one of these monkeys inside. He suspected it was a new species, a relative of the pygmy marmoset, but at that point was unaware of its exact origin. Following a lengthy expedition, it was discovered near the town of Nova Olinda in southeastern Amazonas.

Wikipedia contributors, Roosmalens' dwarf marmoset; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T12:01:01.629076+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Mico humilis (M. van Roosmalen, T. van Roosmalen, Mittermeier & de Fonseca, 1998)

Name authority

(M. van Roosmalen, T. van Roosmalen, Mittermeier & de Fonseca, 1998)

Common name

Black-crowned Dwarf Marmoset

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Primates

Family

Callitrichidae

Genus

Mico

Extinction status

Recorded extant

Classification family tree

Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.

1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
2. kingdomAnimalia
3. phylumChordata
4. subphylumVertebrata
5. infraphylumGnathostomata
6. parvphylumOsteichthyes
7. megaclassTetrapoda
8. classMammalia Linnaeus, 1758
9. subclassTheria Parker & Haswell, 1897
10. infraclassEutheria Gill, 1872
11. orderPrimates Linnaeus, 1758
12. suborderHaplorrhini Pocock, 1918
13. infraorderSimiiformes Haeckel, 1866
14. familyCallitrichidae Gray, 1821
15. genusMico Lesson, 1840
16. speciesMico humilis (M. van Roosmalen, T. van Roosmalen, Mittermeier & de Fonseca, 1998)

Close classified relatives

These entries share the source’s genus, Mico. They are not necessarily the closest relatives established by molecular evidence.

Browse 45 records assigned to Callitrichidae.

Names & synonyms

Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.

Documented distribution

Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.

Source literature & publication evidence

References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.

1. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=998631 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references

Origins, evidence & remaining research

Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.

Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.

Dataset citation & attribution

This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11

Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.

Stable key: col:42MHX. Classification follows source parent identifiers. English common names may vary by region.