NATURAL HISTORY · CATALOGUE RECORD
Atlantic Forest Oryzomys
Hylaeamys laticeps (Lund, 1840)
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
Hylaeamys laticeps, also known as the Atlantic Forest oryzomys or the large-headed rice rat, is a species of rodent in the family Cricetidae.
The rodent is endemic to the Atlantic Forest region of southeastern Brazil.
The taxonomic history of Hylaeamys laticeps has been complex, and the name laticeps has been used for various members of the genera Cerradomys, Euryoryzomys, Transandinomys and Hylaeamys at different times. Until 2006, it was classified in the genus Oryzomys as Oryzomys laticeps. The species Oryzomys seuanezi is now a junior synonym of H. laticeps.
Wikipedia contributors, Hylaeamys laticeps; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T10:41:59.434600+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Hylaeamys laticeps (Lund, 1840)
- Name authority
- (Lund, 1840)
- Common name
- Atlantic Forest Oryzomys
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Rodentia
- Family
- Cricetidae
- Genus
- Hylaeamys
- 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
- genusHylaeamys Weksler, Percequillo & Voss, 2006
- speciesHylaeamys laticeps (Lund, 1840)
Close classified relatives
These entries share the source’s genus, Hylaeamys. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Hylaeamys acritus (Emmons & Patton, 2005) | CricetidaeChordata | Accepted speciesRecorded extant |
| Sowbug Rice RatHylaeamys oniscus (Thomas, 1904) | CricetidaeChordata | Accepted speciesRecorded extant |
| Tate's OryzomysHylaeamys tatei (Musser, Carleton, Brothers & Gardner, 1998) | CricetidaeChordata | Accepted speciesRecorded extant |
| Amazonian OryzomysHylaeamys yunganus (Thomas, 1902) | CricetidaeChordata | Accepted speciesRecorded extant |
| Azara's Broad-headed OryzomysHylaeamys megacephalus (Fischer, 1814) | CricetidaeChordata | Accepted speciesRecorded extant |
| Western Amazonian OryzomysHylaeamys perenensis (J. A. Allen, 1901) | CricetidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Oryzomys laticeps (Lund, 1840) (Lund, 1840) | synonym |
| Oryzomys seuanezi Weksler, Geise & Cerqueira, 1999 Weksler, Geise & Cerqueira, 1999 | 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=972490 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:3NDGN. Classification follows source parent identifiers. English common names may vary by region.