NATURAL HISTORY · CATALOGUE RECORD
San Luis Potosi Nightsnake [jani]
Hypsiglena jani (Dugès, 1865)
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
Hypsiglena jani, commonly known as the Texas night snake or the Chihuahuan night snake, is a small species of mildly venomous snake in the subfamily Dipsadinae of the family Colubridae. The species is native to the southwestern United States and adjacent northeastern Mexico.
Wikipedia contributors, Hypsiglena jani; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T13:21:25.415710+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Hypsiglena jani (Dugès, 1865)
- Name authority
- (Dugès, 1865)
- Common name
- San Luis Potosi Nightsnake [jani]
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Hypsiglena
- 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
- subfamilyDipsadinae
- genusHypsiglena
- speciesHypsiglena jani (Dugès, 1865)
Close classified relatives
These entries share the source’s genus, Hypsiglena. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Islas Revillagigedo NightsnakeHypsiglena unaocularus Tanner, 1946 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Rio Verde NightsnakeHypsiglena tanzeri Dixon & Lieb, 1972 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Hypsiglena chlorophaea Cope, 1860 | 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 |
|---|---|
| Liophis janii Dugès, 1865 Dugès, 1865 | synonym |
| Hypsiglena torquata dunklei Taylor, 1939 Taylor, 1939 | synonym |
| Hypsiglena texana Stejneger, 1893 Stejneger, 1893 | 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=Hypsiglena&species=jani 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:6MSPW. Classification follows source parent identifiers. English common names may vary by region.