NATURAL HISTORY · CATALOGUE RECORD
Geoffroy's Marmoset
Callithrix geoffroyi (Humboldt, 1812)
Source-backed taxonomic record
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The white-headed marmoset (Callithrix geoffroyi), also known as the tufted-ear marmoset, Geoffroy's marmoset, or Geoffrey's marmoset, is a marmoset endemic to forests in eastern Brazil, where it is native to Bahia, Espírito Santo, and Minas Gerais, and introduced to Santa Catarina. It is known as the sagüi or sauim in Brazil. Its diet consists of fruits, insects, and the gum of trees. It is a host of Pachysentis lenti an acanthocephalan intestinal parasite.
Wikipedia contributors, White-headed marmoset; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T07:35:50.552135+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Callithrix geoffroyi (Humboldt, 1812)
- Name authority
- (Humboldt, 1812)
- Common name
- Geoffroy's Marmoset
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Primates
- Family
- Callitrichidae
- Genus
- Callithrix
- 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.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classMammalia Linnaeus, 1758
- subclassTheria Parker & Haswell, 1897
- infraclassEutheria Gill, 1872
- orderPrimates Linnaeus, 1758
- suborderHaplorrhini Pocock, 1918
- infraorderSimiiformes Haeckel, 1866
- familyCallitrichidae Gray, 1821
- genusCallithrix Erxleben, 1777
- speciesCallithrix geoffroyi (Humboldt, 1812)
Close classified relatives
These entries share the source’s genus, Callithrix. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Buffy-headed MarmosetCallithrix flaviceps (Thomas, 1903) | CallitrichidaeChordata | Accepted speciesRecorded extant |
| Black-pencilled MarmosetCallithrix penicillata (É. Geoffroy Saint-Hilaire, 1812) | CallitrichidaeChordata | Accepted speciesRecorded extant |
| Wied's Black-tufted-ear MarmosetCallithrix kuhlii Coimbra-Filho, 1985 | CallitrichidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Jacchus leucogenys Gray, 1870 Gray, 1870 | synonym |
| Simia albifrons Thunberg, 1819 Thunberg, 1819 | synonym |
| Simia geoffroyi Humboldt, 1812 Humboldt, 1812 | synonym |
| Hapale melanotis Lesson, 1840 Lesson, 1840 | synonym |
| Jacchus leucocephalus Humboldt, 1812 Humboldt, 1812 | synonym |
| Jacchus maximiliani Reichenbach, 1862 Reichenbach, 1862 | synonym |
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.
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=572913 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:5X7NT. Classification follows source parent identifiers. English common names may vary by region.