NATURAL HISTORY · CATALOGUE RECORD
Aleutian Island Collared Lemming
Dicrostonyx unalascensis Merriam, 1900
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 Unalaska collared lemming (Dicrostonyx unalascensis), also known as the Umnak Island collared lemming, is a species of rodent in the family Cricetidae, which includes the voles, lemmings and related species. This species is found on two islands, Umnak and Unalaska, in the Aleutian Archipelago of Alaska in the United States. Its natural habitat is tundra.
Wikipedia contributors, Unalaska collared lemming; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T13:04:28.049430+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Dicrostonyx unalascensis Merriam, 1900
- Name authority
- Merriam, 1900
- Common name
- Aleutian Island Collared Lemming
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Rodentia
- Family
- Cricetidae
- Genus
- Dicrostonyx
- 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
- subfamilyArvicolinae Gray, 1821
- genusDicrostonyx Gloger, 1841
- speciesDicrostonyx unalascensis Merriam, 1900
Close classified relatives
These entries share the source’s genus, Dicrostonyx. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Collared LemmingDicrostonyx groenlandicus (Traill, 1823) | CricetidaeChordata | Accepted speciesRecorded extant |
| Nelson's Collared LemmingDicrostonyx nelsoni Merriam, 1900 | CricetidaeChordata | Accepted speciesRecorded extant |
| Arctic LemmingDicrostonyx torquatus (Pallas, 1778) | 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 |
|---|---|
| Dicrostonyx unalascensis stevensoni Nelson, 1929 Nelson, 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=180334 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:6D636. Classification follows source parent identifiers. English common names may vary by region.