NATURAL HISTORY · CATALOGUE RECORD
Steppes Ratsnakes
Elaphe dione (Pallas, 1773)
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
Elaphe dione, commonly known as Dione's rat snake, the steppe rat snake, or the steppes rat snake, is a species of snake in the family Colubridae. The species is native to Asia and Eastern Europe. There are no subspecies that are recognized as being valid. A large specimen from Putyatin Island measured up to 90 cm (3.0 ft) in length.
Wikipedia contributors, Steppe rat snake; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T06:38:01.565612+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Elaphe dione (Pallas, 1773)
- Name authority
- (Pallas, 1773)
- Common name
- Steppes Ratsnakes
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Elaphe
- Extinction status
- Not supplied by this source
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
- classReptilia Laurenti, 1768
- orderSquamata Oppel, 1811
- suborderSerpentes Linnaeus, 1758
- infraorderAlethinophidia Nopcsa, 1923
- familyColubridae
- subfamilyColubrinae
- genusElaphe
- speciesElaphe dione (Pallas, 1773)
Close classified relatives
These entries share the source’s genus, Elaphe. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Elaphe climacophora (Boie, 1826) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Japanese Four-lined RatsnakeElaphe quadrivirgata (Boie, 1826) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Amur RatsnakesElaphe schrenckii Strauch, 1873 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Zoige RatsnakeElaphe zoigeensis Huang, Ding, Burbrink, Yang, Huang, Ling, Chen & Zhang, 2012 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Four-lined snake (or ratsnake)Elaphe quatuorlineata (Lacépède, 1789) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Blade-teethed Rat SnakeElaphe xiphodonta Qi, Shi, Ma, Gao, Bu, Grismer, LI & Wang, 2021 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Elaphe anomala (Boulenger, 1916) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Chinese Leopard SnakeElaphe bimaculata Schmidt, 1925 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Taiwan Stink SnakeElaphe carinata (Günther, 1864) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Pere David's Rat SnakeElaphe davidi (Sauvage, 1884) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Blotched rat snakeElaphe sauromates (Pallas, 1811) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Zamenis pellioti Mocquard, 1910 Mocquard, 1910 | synonym |
| Coluber dione Pallas, 1773 Pallas, 1773 | synonym |
| Coluber eremita Eichwald, 1831 Eichwald, 1831 | synonym |
| Coluber trabalis Schlegel, 1837 Schlegel, 1837 | synonym |
| Elaphe dione niger Golubeva, 1923 Golubeva, 1923 | synonym |
| Elaphe dione tenebrosa Sobolevsky, 1929 Sobolevsky, 1929 | synonym |
| Coluber diana Latreille, 1802 Latreille, 1802 | synonym |
| Elaphe czerskii Nikolsky, 1914 Nikolsky, 1914 | synonym |
| Coluber maeoticus Rathke, 1837 Rathke, 1837 | 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://reptile-database.reptarium.cz/species?genus=Elaphe&species=dione 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:38YKZ. Classification follows source parent identifiers. English common names may vary by region.