NATURAL HISTORY · CATALOGUE RECORD
Andean Colilargo
Oligoryzomys andinus (Osgood, 1914)
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
Oligoryzomys andinus, also known as the Andean colilargo or Andean pygmy rice rat, is a species of rodent in genus Oligoryzomys of family Cricetidae. It is found in the Andes of southern Peru and western Bolivia, but may in fact include more than one species. Its karyotype has 2n = 60 and FNa = 70.
Wikipedia contributors, Oligoryzomys andinus; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T05:13:40.946824+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Oligoryzomys andinus (Osgood, 1914)
- Name authority
- (Osgood, 1914)
- Common name
- Andean Colilargo
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Rodentia
- Family
- Cricetidae
- Genus
- Oligoryzomys
- 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
- orderRodentia Bowdich, 1821
- suborderMyomorpha Brandt, 1855
- superfamilyMuroidea Illiger, 1811
- familyCricetidae Fischer, 1817
- subfamilySigmodontinae Wagner, 1843
- genusOligoryzomys Bangs, 1900
- speciesOligoryzomys andinus (Osgood, 1914)
Close classified relatives
These entries share the source’s genus, Oligoryzomys. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Chacoan ColilargoOligoryzomys chacoensis (Myers & Carleton, 1981) | CricetidaeChordata | Accepted speciesRecorded extant |
| Delta Pygmy Rice RatOligoryzomys delticola (Thomas, 1917) | CricetidaeChordata | Accepted speciesRecorded extant |
| Brazilian ColilargoOligoryzomys eliurus (Wagner, 1845) | CricetidaeChordata | Accepted speciesRecorded extant |
| Fulvous ColilargoOligoryzomys fulvescens (Saussure, 1860) | CricetidaeChordata | Accepted speciesRecorded extant |
| Oligoryzomys utiaritensis Allen, 1916 | CricetidaeChordata | Accepted speciesRecorded extant |
| Sprightly ColilargoOligoryzomys vegetus (Bangs, 1902) | CricetidaeChordata | Accepted speciesRecorded extant |
| St. Vincent ColilargoOligoryzomys victus (Thomas, 1898) | CricetidaeChordata | Accepted speciesRecorded extinct |
| Sandy ColilargoOligoryzomys arenalis (Thomas, 1913) | CricetidaeChordata | Accepted speciesRecorded extant |
| Brenda's ColilargoOligoryzomys brendae Massoia, 1998 | CricetidaeChordata | Accepted speciesRecorded extant |
| Destructive Pygmy Rice RatOligoryzomys destructor (Tschudi, 1844) | CricetidaeChordata | Accepted speciesRecorded extant |
| Flavescent ColilargoOligoryzomys flavescens (Waterhouse, 1837) | CricetidaeChordata | Accepted speciesRecorded extant |
| Fornes' ColilargoOligoryzomys fornesi (Massoia, 1973) | CricetidaeChordata | Accepted speciesRecorded extant |
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=633199 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:74L3Q. Classification follows source parent identifiers. English common names may vary by region.