NATURAL HISTORY · CATALOGUE RECORD
Brazilian Sipo
Chironius laevicollis (Wied-Neuwied, 1824)
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
Chironius laevicollis, the Brazilian sipo, is a species of colubrid snake from Brazil. This species is endemic to the Atlantic Forest along the country's southeast coast, and is common and widespread throughout its range.
Wikipedia contributors, Chironius laevicollis; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T04:08:33.920779+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Chironius laevicollis (Wied-Neuwied, 1824)
- Name authority
- (Wied-Neuwied, 1824)
- Common name
- Brazilian Sipo
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Chironius
- 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
- genusChironius
- speciesChironius laevicollis (Wied-Neuwied, 1824)
Close classified relatives
These entries share the source’s genus, Chironius. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Chironius laurenti Dixon, Wiest & Cei, 1993 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Chironius challenger Kok, 2010 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Central SipoChironius maculoventris Dixon, Wiest & Cei, 1993 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Two-headed SipoChironius bicarinatus (Wied-Neuwied, 1820) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Chironius diamantina Fernandes & Hamdan, 2014 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Mountain SipoChironius monticola Roze, 1952 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Wagler's SipoChironius scurrula (Wagler, 1824) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Amazon CoachwhipChironius carinatus (Linnaeus, 1758) | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| South American SipoChironius multiventris Schmidt & Walker, 1943 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| South American CoachwhipChironius septentrionalis Dixon, Wiest & Cei, 1993 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Gouvea’s SipoChironius gouveai Entiauspe-Neto, Lúcio-Lyra, Koch, Marques-Quintela, Diesel-Abegg & Loebmann, 2020 | ColubridaeChordata | Accepted speciesExtinction status not supplied |
| Chironius dracomaris Sudré, Andrade-Junior, Folly, Azevedo, Ávila, Curcio, Sales Nunes & Passos, 2024 | 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 |
|---|---|
| Coluber laevicollis Wied, 1824 Wied, 1824 | 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=Chironius&species=laevicollis 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:69T86. Classification follows source parent identifiers. English common names may vary by region.