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NATURAL HISTORY · CATALOGUE RECORD

Khwarg’s Eyelash-Pitviper.

Bothriechis khwargi Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024

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

Bothriechis khwargi, also known as Khwarg’s eyelash-pitviper, is a species of pit viper in the family Viperidae. It was described in 2024, alongside 4 other species in its genus, by the Ecuadorian-Venezuelan herpetologist Alejandro Arteaga and his colleagues. It is named after Juewon Khwarg to honor his work discovering and protecting new species of vipers in the Colombian Andes. Female Khwarg’s eyelash-pitvipers can reach lengths of 610 mm (24 in), while males are shorter, reaching a maximum length of 219 mm (8.6 in). Khwarg’s eyelash-pitviper is known from the western foothills of Colombia’s Cordillera Oriental. The species occurs over an area of approximately 14,697 km2 and has been recorded at elevations of 167–1,800 m (548–5,906 ft) above sea level. It is an arboreal snake that inhabits evergreen foothill forests, where it can be observed on the ground and in low understory vegetation. The study describing Khwarg’s eyelash-pitviper recommended it be classified as being vulnerable on the IUCN Red List because of the species' restricted range, fragmented distribution, and ongoing habitat degradation in its range.

Wikipedia contributors, Bothriechis khwargi; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T08:03:59.997355+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name
Bothriechis khwargi Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024
Name authority
Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024
Common name
Khwarg’s Eyelash-Pitviper.
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Chordata
Class
Reptilia
Order
Squamata
Family
Viperidae
Genus
Bothriechis
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. genusBothriechis
  15. speciesBothriechis khwargi Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024

Close classified relatives

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

SpeciesClassificationSource status
Yellow-blotched Palm Pit ViperBothriechis aurifer (Salvin, 1860)ViperidaeChordataAccepted speciesExtinction status not supplied
Coffee Palm ViperBothriechis lateralis Peters, 1862ViperidaeChordataAccepted speciesExtinction status not supplied
Hussain’s Eyelash-PitviperBothriechis hussaini Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024ViperidaeChordataAccepted speciesExtinction status not supplied
Klebba’s Eyelash-PitviperBothriechis klebbai Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024ViperidaeChordataAccepted speciesExtinction status not supplied
Central Ameri- can Eyelash-PitviperBothriechis nigroadspersus (Steindachner, 1870)ViperidaeChordataAccepted speciesExtinction status not supplied
Ecuadorian Eyelash-PitviperBothriechis nitidus (Günther, 1859)ViperidaeChordataAccepted speciesExtinction status not supplied
Shah’s Eyelash-PitviperBothriechis rasikusumorum Arteaga, Pyron, Batista, Vieira, Meneses-Pelayo, Smith, Barrio-Amorós, Koch, Agne, Valencia, Bustamante & Harris, 2024ViperidaeChordataAccepted speciesExtinction status not supplied
Birri Eyelash-PitviperBothriechis torvus (Posada-Arango, 1889)ViperidaeChordataAccepted speciesExtinction status not supplied
Guatemala Palm Pit ViperBothriechis bicolor (Bocourt, 1868)ViperidaeChordataAccepted speciesExtinction status not supplied
Black-speckled Palm Pit ViperBothriechis nigroviridis Peters, 1859ViperidaeChordataAccepted speciesExtinction status not supplied
Highland Eyelash-PitviperBothriechis schlegelii (Berthold, 1846)ViperidaeChordataAccepted speciesExtinction status not supplied
Blotched Eyelash-PitviperBothriechis supraciliaris (Taylor, 1954)ViperidaeChordataAccepted speciesExtinction status not supplied

Browse 244 records assigned to Viperidae.

Documented distribution

Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.

Colombia (Cordillera Oriental)

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=Bothriechis&species=khwargi 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:C6JSH. Classification follows source parent identifiers. English common names may vary by region.