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NATURAL HISTORY · CATALOGUE RECORD

Geoffroy's Saddle-back Tamarin

Leontocebus nigrifrons (I. Geoffroy Saint-Hilaire, 1850)

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.

The approximate distribution of the Geoffroy's Saddle-back Tamarin. Data from https://doi.org/10.48600/MOL-48VZ-P413

The approximate distribution of the Geoffroy's Saddle-back Tamarin. Data from https://doi.org/10.48600/MOL-48VZ-P413

Nrg800 · CC BY-SA 4.0 · Image source

Provider-generated thumbnail requested at 800 pixels; no local editing Local WebP display rendition; resized without cropping.

Open encyclopedia reference

Geoffroy's saddle-back tamarin (Leontocebus nigrifrons) is a species of saddle-back tamarin, a type of small monkey from South America. Geoffroy's saddle-back tamarin was formerly considered to be a subspecies of the brown-mantled tamarin, L. fuscicollis. It lives in Loreto, Peru.

Geoffroy's saddle-back tamarin has a head and body length of between 190 millimetres (7.5 in) and 219 millimetres (8.6 in) with a tail length between 305 millimetres (12.0 in) and 333 millimetres (13.1 in) long. Males weigh about 354 grams (12.5 oz) and females weight about 369 grams (13.0 oz).

It lives in groups with multiple males and females. It reaches sexual maturity at 18 months. Both males and females emigrate from their natal group. Geoffroy's saddle-back tamarin frequently associates with and forms mixed groups with moustached tamarins, Saguinus mystax. The two species often sleep in the same tree and both species respond to each other's alarm calls.

Its diet consists of fruits, gums, nectar, insects and other small animals.

The IUCN rates it as least concern from a conservation standpoint.

Wikipedia contributors, Geoffroy's saddle-back tamarin; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T12:10:32.927775+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name
Leontocebus nigrifrons (I. Geoffroy Saint-Hilaire, 1850)
Name authority
(I. Geoffroy Saint-Hilaire, 1850)
Common name
Geoffroy's Saddle-back Tamarin
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Primates
Family
Callitrichidae
Genus
Leontocebus
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. genusLeontocebus Wagner, 1840
  16. speciesLeontocebus nigrifrons (I. Geoffroy Saint-Hilaire, 1850)

Close classified relatives

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

SpeciesClassificationSource status
Lesson's Saddle-back TamarinLeontocebus fuscus (Lesson, 1840)CallitrichidaeChordataAccepted speciesRecorded extant
Red-mantled Saddle-back TamarinLeontocebus lagonotus (Jiménez de la Espada, 1870)CallitrichidaeChordataAccepted speciesRecorded extant
Andean Saddle-back TamarinLeontocebus leucogenys (Gray, 1866)CallitrichidaeChordataAccepted speciesRecorded extant
Black-mantled TamarinLeontocebus nigricollis (Spix, 1823)CallitrichidaeChordataAccepted speciesRecorded extant
Cruz Lima's Saddle-back TamarinLeontocebus cruzlimai (Hershkovitz, 1966)CallitrichidaeChordataAccepted speciesRecorded extant
Brown-mantled TamarinLeontocebus fuscicollis (Spix, 1823)CallitrichidaeChordataAccepted speciesRecorded extant
Golden-mantled Saddle-back TamarinLeontocebus tripartitus (A. Milne-Edwards, 1878)CallitrichidaeChordataAccepted speciesRecorded extant
Weddell's Saddle-back TamarinLeontocebus weddelli (Deville, 1849)CallitrichidaeChordataAccepted speciesRecorded extant

Browse 45 records assigned to Callitrichidae.

Names & synonyms

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

Recorded nameSource status
Mystax nigrifrons pebilis Thomas, 1928 Thomas, 1928synonym
Saguinus fuscicollis nigrifrons (I. Geoffroy Saint-Hilaire, 1850) (I. Geoffroy Saint-Hilaire, 1850)synonym
Hapale nigrifrons I. Geoffroy Saint-Hilaire, 1850 I. Geoffroy Saint-Hilaire, 1850synonym
Saguinus nigrifrons (I. Geoffroy Saint-Hilaire, 1850) (I. Geoffroy Saint-Hilaire, 1850)synonym

Documented distribution

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

South America

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=1025100 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:3T6RL. Classification follows source parent identifiers. English common names may vary by region.