NATURAL HISTORY · CATALOGUE RECORD
Tuft-tailed Spiny Tree Rat
Lonchothrix emiliae Thomas, 1920
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
The tuft-tailed spiny tree rat (Lonchothrix emiliae) is a spiny rat species from Brazil south of the Amazon River, where it has been found in grassland and gallery forest. It is the only species in the genus Lonchothrix.
Very little is known about this rodent. It is small with an average adult weight of about 138 grams. It is nocturnal and solitary in habits.
The genus and species were described by Oldfield Thomas in 1920. The genus name Lonchothrix derives from the two ancient greek words λόγχη (lónkhē), meaning "spear", and θρίξ, τριχός (thríx, trikhós), meaning "hair".
Wikipedia contributors, Tuft-tailed spiny tree-rat; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T12:43:12.949724+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Lonchothrix emiliae Thomas, 1920
- Name authority
- Thomas, 1920
- Common name
- Tuft-tailed Spiny Tree Rat
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Rodentia
- Family
- Echimyidae
- Genus
- Lonchothrix
- 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
- suborderHystricomorpha Brandt, 1855
- infraorderHystricognathi Brandt, 1855
- familyEchimyidae Gray, 1825
- subfamilyEchimyinae Gray, 1825
- tribeEchimyini Gray, 1825
- genusLonchothrix Thomas, 1920
- speciesLonchothrix emiliae Thomas, 1920
Close classified relatives
No other member of this genus is present in the selected snapshot.
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=584822 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:3VYDM. Classification follows source parent identifiers. English common names may vary by region.