NATURAL HISTORY · CATALOGUE RECORD
Island Pit Viper
Trimeresurus labialis Fitzinger, 1867
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
Trimeresurus labialis, commonly called Nicobar bamboo pit viper, is a venomous pit viper species endemic to the Nicobar Islands of India. No subspecies are currently recognized. Based on IUCN assessment in 2021, this viper is classified as critically endangered.
Wikipedia contributors, Trimeresurus labialis; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T08:07:38.649101+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Trimeresurus labialis Fitzinger, 1867
- Name authority
- Fitzinger, 1867
- Common name
- Island Pit Viper
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Squamata
- Family
- Viperidae
- Genus
- Trimeresurus
- 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
- familyViperidae
- subfamilyCrotalinae
- genusTrimeresurus
- speciesTrimeresurus labialis Fitzinger, 1867
Close classified relatives
These entries share the source’s genus, Trimeresurus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Green Bamboo Leaf Pit ViperTrimeresurus medoensis Zhao, 1977 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Philippine pitviperTrimeresurus flavomaculatus (Gray, 1842) | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Gumprecht’s green pitviperTrimeresurus gumprechti David, Vogel, Pauwels & Vidal, 2002 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| White-lipped island pitviperTrimeresurus insularis Kramer, 1977 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Central Nicobar Pit ViperTrimeresurus mutabilis Stoliczka, 1870 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Cameron Highlands pitviperTrimeresurus nebularis Vogel, David & Pauwels, 2004 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Ruby-eyed Green PitviperTrimeresurus rubeus (Malhotra, Thorpe, Mrinalini & Stuart, 2011) | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Vogel’s Pit ViperTrimeresurus vogeli David, Vidal & Pauwels, 2001 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Trimeresurus stejnegeri Schmidt, 1925 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Beautiful pitviperTrimeresurus venustus Vogel, 1991 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Ornamental tailed pit- viperTrimeresurus caudornatus Chen, Ding, Vogel & Shi, 2020 | ViperidaeChordata | Accepted speciesExtinction status not supplied |
| Salazar’s pit viperTrimeresurus salazar Mirza, Bhosale, Phansalkar, Sawant, Gowande & Patel, 2020 | ViperidaeChordata | 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 |
|---|---|
| Bothrophis labialis Fitzinger, 1861 Fitzinger, 1861 | 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=Trimeresurus&species=labialis 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:7CTMF. Classification follows source parent identifiers. English common names may vary by region.