NATURAL HISTORY · CATALOGUE RECORD
White-bellied Slender Opossum
Marmosops (Marmosops) noctivagus (Tschudi, 1844)
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 white-bellied slender opossum (Marmosops noctivagus) is a species of opossum from South America. It is found in Bolivia, Brazil, Ecuador and Peru.
Though previously regarded as a species, M. dorothea, Dorothy's slender opossum, is a synonym of M. noctivagus. On the other hand, M. ocellatus, a junior synonym of M. dorothea, is now recognized as a separate true species.
Wikipedia contributors, White-bellied slender opossum; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T12:05:50.126282+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Marmosops (Marmosops) noctivagus (Tschudi, 1844)
- Name authority
- (Tschudi, 1844)
- Common name
- White-bellied Slender Opossum
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Didelphimorphia
- Family
- Didelphidae
- Genus
- Marmosops
- 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
- infraclassMetatheria Huxley, 1880
- orderDidelphimorphia Gill, 1872
- familyDidelphidae Gray, 1821
- subfamilyDidelphinae Gray, 1821
- tribeThylamyini Hershkovitz, 1992
- genusMarmosops Matschie, 1916
- subgenusMarmosops Matschie, 1916
- speciesMarmosops (Marmosops) noctivagus (Tschudi, 1844)
Close classified relatives
These entries share the source’s genus, Marmosops. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Handley's Slender OpossumMarmosops (Sciophanes) handleyi (Pine, 1981) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Junin Slender OpossumMarmosops (Sciophanes) juninensis (Tate, 1931) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Delicate Slender OpossumMarmosops (Sciophanes) parvidens (Tate, 1931) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Cordillera Slender OpossumMarmosops (Sciophanes) chucha Díaz-Nieto & Voss, 2016 | DidelphidaeChordata | Accepted speciesRecorded extant |
| Tschudi's Slender OpossumMarmosops (Marmosops) caucae (Thomas, 1900) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Soini's Slender OpossumMarmosops (Marmosops) soinii Voss, Fleck & Jansa, 2019 | DidelphidaeChordata | Accepted speciesRecorded extant |
| Bishop's Slender OpossumMarmosops (Sciophanes) bishopi (Pine, 1981) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Dusky Slender OpossumMarmosops (Sciophanes) fuscatus (Thomas, 1896) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Panama Slender OpossumMarmosops (Sciophanes) invictus (Goldman, 1912) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Brazilian Slender OpossumMarmosops (Marmosops) paulensis (Tate, 1931) | DidelphidaeChordata | Accepted speciesRecorded extant |
| Pinheiro's Slender OpossumMarmosops (Sciophanes) pinheiroi (Pine, 1981) | DidelphidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Marmosops dorothea (Thomas, 1911) (Thomas, 1911) | synonym |
| Didelphys noctivaga Tschudi, 1844 Tschudi, 1844 | 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=552561 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:3Y83Y. Classification follows source parent identifiers. English common names may vary by region.