Gray-legged Night Monkey

Open encyclopedia reference

The gray-handed night monkey (Aotus griseimembra) is a species of night monkey formerly considered a subspecies of Gray-bellied night monkey of the family Aotidae. Its range consists of parts of Colombia and Venezuela. The exact classification of the gray-handed night monkey is uncertain. While some authors consider it a subspecies of the gray-bellied night monkey, A. lemurinus, other authors consider it a separate species, A. griseimembra. In Colombia, its range consists of the northern portion from the Sinú River (or perhaps further east) to the Venezuelan border, including the Sierra Nevada de Santa Marta and the Magdalena River, Cauca River and Sao Jorge River valleys. In Venezuela, it is found to the west and south of Maracaibo. The gray-handed night monkey is a relatively small monkey, with males weighing approximately 1,009 grams (35.6 oz) and females weighing about 923 grams (32.6 oz). It has short, tight fur. The fur on the back ranges from grayish brown to reddish brown. The belly is yellowish.

Wikipedia contributors, Gray-handed night monkey; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T10:45:36.130574+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Aotus griseimembra Elliot, 1912

Name authority

Elliot, 1912

Common name

Gray-legged Night Monkey

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Primates

Family

Aotidae

Genus

Aotus

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. familyAotidae Elliot, 1913
15. genusAotus Illiger, 1811
16. speciesAotus griseimembra Elliot, 1912

Close classified relatives

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

Browse 5 records assigned to Aotidae.

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=944169 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:67L6F. Classification follows source parent identifiers. English common names may vary by region.