Southern Copperhead

Open encyclopedia reference

The eastern copperhead (Agkistrodon contortrix), also known simply as the copperhead, is a widespread species of venomous snake, a pit viper, endemic to eastern United States of America; it is a member of the subfamily Crotalinae in the family Viperidae. The eastern copperhead has distinctive, dark brown, hourglass-shaped markings, overlaid on a light reddish brown or brown/gray background. The body type is heavy, rather than slender. Neonates are born with green or yellow tail tips, which progress to a darker brown or black within one year. Adults grow to a typical length (including tail) of 50–95 cm (20–37 in). In most of the United States of America, the eastern copperhead favors deciduous forest and mixed woodlands. It may occupy rock outcroppings and ledges, but is also found in low-lying, swampy regions. During the winter, it hibernates in dens or limestone crevices, often together with timber rattlesnakes and black rat snakes. The eastern copperhead is known to feed on a wide variety of prey, including invertebrates (primarily arthropods) and vertebrates.

Wikipedia contributors, Eastern copperhead; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T07:40:17.158366+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Agkistrodon contortrix (Linnaeus, 1766)

Name authority

(Linnaeus, 1766)

Common name

Southern Copperhead

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Reptilia

Order

Squamata

Family

Viperidae

Genus

Agkistrodon

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.

1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
2. kingdomAnimalia
3. phylumChordata
4. subphylumVertebrata
5. infraphylumGnathostomata
6. parvphylumOsteichthyes
7. megaclassTetrapoda
8. classReptilia Laurenti, 1768
9. orderSquamata Oppel, 1811
10. suborderSerpentes Linnaeus, 1758
11. infraorderAlethinophidia Nopcsa, 1923
12. familyViperidae
13. subfamilyCrotalinae
14. genusAgkistrodon
15. speciesAgkistrodon contortrix (Linnaeus, 1766)

Close classified relatives

These entries share the source’s genus, Agkistrodon. They are not necessarily the closest relatives established by molecular evidence.

Browse 244 records assigned to Viperidae.

Names & synonyms

Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.

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.

1. https://reptile-database.reptarium.cz/species?genus=Agkistrodon&species=contortrix 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:5TRLB. Classification follows source parent identifiers. English common names may vary by region.