Giant White-tailed Uromys
Uromys (Uromys) caudimaculatus (Krefft, 1867)
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.

White-tailed Giant Rat (Uromys caudimaculatus) in Australia
Romain Boisseau · CC BY-SA 4.0 · Image sourceProvider-generated thumbnail requested at 800 pixels; no local editing Local WebP display rendition; resized without cropping.
Open encyclopedia reference
The giant white-tailed rat (Uromys caudimaculatus) is an Australian rodent native to tropical rainforest of north Queensland, Australia with subspecies occurring in New Guinea and the Aru Islands. It is one of the largest rodents in Australia, reaching up to 1 kg in weight. It is grey-brown above, cream to white below, and has a long, naked tail of which the distal section is white (Moore 1995).
Breeding commences in September or October, peaking in December and January at the height of the wet season. After a gestation of 36 days, a litter of two to three (rarely four) young are born, and remain with the mother for approximately three months (Moore 1995).
Wikipedia contributors, Giant white-tailed rat; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T11:04:18.635225+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Uromys (Uromys) caudimaculatus (Krefft, 1867)
- Name authority
- (Krefft, 1867)
- Common name
- Giant White-tailed Uromys
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Rodentia
- Family
- Muridae
- Genus
- Uromys
- 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
- familyMuridae Illiger, 1811
- subfamilyMurinae Illiger, 1811
- genusUromys Peters, 1867
- subgenusUromys Peters, 1867
- speciesUromys (Uromys) caudimaculatus (Krefft, 1867)
Close classified relatives
These entries share the source’s genus, Uromys. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Emma's UromysUromys (Uromys) emmae Groves & Flannery, 1994 | MuridaeChordata | Accepted speciesRecorded extant |
| Masked White-tailed UromysUromys (Uromys) hadrourus (Winter, 1984) | MuridaeChordata | Accepted speciesRecorded extant |
| Biak Island UromysUromys (Uromys) boeadii Groves & Flannery, 1994 | MuridaeChordata | Accepted speciesRecorded extant |
| New Britain Island UromysUromys (Uromys) neobritannicus Tate & Archbold, 1935 | MuridaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Uromys aruensis Gray, 1873 Gray, 1873 | synonym |
| Uromys ductor Thomas, 1913 Thomas, 1913 | synonym |
| Uromys prolixus Thomas, 1913 Thomas, 1913 | synonym |
| Uromys sherrini Thomas, 1923 Thomas, 1923 | synonym |
| Uromys validus Peters & Doria, 1881 Peters & Doria, 1881 | synonym |
| Uromys waigeuensis Frechkop, 1932 Frechkop, 1932 | synonym |
| Hapalotis caudimaculatus Krefft, 1867 Krefft, 1867 | synonym |
| Mus macropus Gray, 1866 Gray, 1866 | ambiguous synonym |
| Uromys lamington Troughton, 1937 Troughton, 1937 | synonym |
| Uromys nero Thomas, 1913 Thomas, 1913 | synonym |
| Uromys scaphax Thomas, 1913 Thomas, 1913 | synonym |
| Uromys macropus exilis Troughton & Le Souef, 1929 Troughton & Le Souef, 1929 | 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=585604 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:7DXVN. Classification follows source parent identifiers. English common names may vary by region.