Eastern Pygmy Marmoset

Open encyclopedia reference

The eastern pygmy marmoset (Cebuella niveiventris) is a marmoset species, a very small New World monkey, found in the southwestern Amazon rainforest in Bolivia, Brazil, Ecuador, and Peru. It was formerly regarded as conspecific with the similar western pygmy marmoset, but the eastern pygmy marmoset has whitish colored underparts. Although the eastern pygmy marmoset occurs further east than the western pygmy marmoset, the primary separators of their ranges are the Amazon River (Solimões River) and Maranon River, with the western occurring to the north of them and the eastern to the south. The species has recently been confirmed by DNA testing to exist in Ecuador, hundreds of kilometers north of the Maranon River.

Wikipedia contributors, Eastern pygmy marmoset; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T09:41:56.301325+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Cebuella niveiventris Lönnberg, 1940

Name authority

Lönnberg, 1940

Common name

Eastern Pygmy Marmoset

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Primates

Family

Callitrichidae

Genus

Cebuella

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. genusCebuella Gray, 1866
16. speciesCebuella niveiventris Lönnberg, 1940

Close classified relatives

These entries share the source’s genus, Cebuella. 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=1063221 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.

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:RYYP. Classification follows source parent identifiers. English common names may vary by region.