# Trimeresurus venustus

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Species of snake

Trimeresurus venustus Conservation status Vulnerable (IUCN 3.1) Scientific classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Suborder: Serpentes Family: Viperidae Genus: Trimeresurus Species: T. venustus Binomial name Trimeresurus venustus Vogel, 1991 Synonyms Cryptelytrops venustus

***Trimeresurus venustus*** is a [venomous](/source/Venomous_snake) [pit viper](/source/Crotalinae) [species](/source/Species) [endemic](/source/Endemic) to southern [Thailand](/source/Thailand).[1] Its common names include **beautiful pit viper** and **brown-spotted pit viper**.[1]

## Taxonomy

This species was considered a synonym of *Trimeresurus kanburiensis* until around the turn of the century.[2] It was described by Gernot Vögel in 1991.[3] It is in the subgenus *Trimeresurus*.[4]

## Etymology

Derived from [Latin](/source/Latin), the name *venustus* means beautiful, and refers to the striking, intricate color scheme.[1]

## Description

This species has a slender body and is approximately 580 mm (23 in) in length.[5] They have a triangular-shaped head, like all pit vipers.[6] Their [labials](/source/Labial_scale) are green with brown patches and a dark [postorbital](/source/Postorbital_process) stripe is present.[5]

Their distinctive coloration ranges from vibrant green to olive green with brown or reddish-orange bands along the length of the body.[7] In males, the [dorsal](/source/Anatomical_terms_of_location) area is an olive or bluish-green color, while females have a grass-green dorsal area.[5] Their short snout is slightly flattened with a small ridge, and they have [heat-sensing pits](/source/Infrared_sensing_in_snakes) in-between their nostrils.[8] Their irises are a light orange with brown specks.[5] The dorsal scales are strongly keeled and have a count of 21 – 21 – 15.[9]

## Distribution and habitat

*T. venustus* is native to southern Thailand and is also found in northern [peninsular Malaysia](/source/Peninsular_Malaysia).[1][5] Being mainly [arboreal](/source/Arboreal_locomotion),[7] they can be found up to 700 m (2,300 ft) in elevation inhabiting limestone hills, shaded, humid valleys, [rubber tree](/source/Hevea_brasiliensis) plantations, and both primary and secondary rainforests.[5][6]

## Biology

### Feeding

Using heat-sensing pits, these pitvipers hunt mice, frogs, and lizards.[9]

### Reproduction

*T. venustus* is [ovoviviparous](/source/Ovoviviparity).[1]

### Venom

A bite resulted in swelling and a discoloration of the skin. Local symptoms were displayed, such as [coagulopathy](/source/Coagulopathy).[7] Their venom has a moderate level of toxicity, and all bites should be treated as potentially dangerous. [Green pit viper](/source/Trimeresurus_macrops) [antivenom](/source/Antivenom) is used as treatment.[6]

## References

1. ^ [***a***](#cite_ref-RDB_1-0) [***b***](#cite_ref-RDB_1-1) [***c***](#cite_ref-RDB_1-2) [***d***](#cite_ref-RDB_1-3) [***e***](#cite_ref-RDB_1-4) [*Trimeresurus venustus*](http://reptile-database.reptarium.cz/species.php?genus=Trimeresurus&species=venustus) at the [Reptarium.cz Reptile Database](http://reptile-database.reptarium.cz/). Accessed 2 February 2017.

1. **[^](#cite_ref-2)** Uetz, Peter. ["Trimeresurus venustus"](https://reptile-database.reptarium.cz/species?genus=Trimeresurus&species=venustus&search_param=%28%28genus%3D%27trimeresurus%27%29%29). *The Reptile Database*. Retrieved 2025-04-27.

1. **[^](#cite_ref-3)** Vogel, G. (1991). ["Eine neue *Trimeresurus*-Art aus Thailand, *Trimeresurus venustus* sp. nov.(Reptilia: Serpentes: Crotalidae)"](http://www.gernot-vogel.de/publications/Vogel1991Sauria_-_Trimeresurus_venustus.pdf) (PDF). *Sauria*. **13**: 23–28.

1. **[^](#cite_ref-4)** Mirza, Zeeshan A.; Lalremsanga, H. T.; Bhosale, Harshal; Gowande, Gaurang; Patel, Harshil; Idiatullina, Sabira S.; Poyarkov, Nikolay A. (2023-02-24). ["Systematics of *Trimeresurus popeiorum* Smith, 1937 with a revised molecular phylogeny of Asian pitvipers of the genus *Trimeresurus* Lacépède, 1804 sensu lato"](https://evolsyst.pensoft.net/article/97026/). *Evolutionary Systematics*. **7** (1): 91–104. [doi](/source/Doi_(identifier)):[10.3897/evolsyst.7.97026](https://doi.org/10.3897%2Fevolsyst.7.97026). [ISSN](/source/ISSN_(identifier)) [2535-0730](https://search.worldcat.org/issn/2535-0730).

1. ^ [***a***](#cite_ref-:3_5-0) [***b***](#cite_ref-:3_5-1) [***c***](#cite_ref-:3_5-2) [***d***](#cite_ref-:3_5-3) [***e***](#cite_ref-:3_5-4) [***f***](#cite_ref-:3_5-5) Indraneil, Das (2010). *A Field Guide to the Reptiles of South-East Asia*. London: New Holland Publishers. [ISBN](/source/ISBN_(identifier)) [978-1-4729-2059-1](https://en.wikipedia.org/wiki/Special:BookSources/978-1-4729-2059-1).

1. ^ [***a***](#cite_ref-:0_6-0) [***b***](#cite_ref-:0_6-1) [***c***](#cite_ref-:0_6-2) Mark (2025-03-09). ["Krabi's Brown-Spotted Pit Viper (Beautiful Pit Viper)"](https://krabinature.com/krabi-brown-spotted-pit-viper/). *Krabi Nature - Wildlife Field Trips, Tours, and Photography*. Retrieved 2025-03-15.

1. ^ [***a***](#cite_ref-:4_7-0) [***b***](#cite_ref-:4_7-1) [***c***](#cite_ref-:4_7-2) Fuchs, Joan; Bessire, Karin; Weiler, Stefan (2019-05-01). ["A confirmed bite by a Beautiful Pit Viper (Trimeresurus venustus) resulting in local symptoms"](https://www.sciencedirect.com/science/article/abs/pii/S0041010119300935). *Toxicon*. **163**: 44–47. [Bibcode](/source/Bibcode_(identifier)):[2019Txcn..163...44F](https://ui.adsabs.harvard.edu/abs/2019Txcn..163...44F). [doi](/source/Doi_(identifier)):[10.1016/j.toxicon.2019.03.019](https://doi.org/10.1016%2Fj.toxicon.2019.03.019). [ISSN](/source/ISSN_(identifier)) [0041-0101](https://search.worldcat.org/issn/0041-0101). [PMID](/source/PMID_(identifier)) [30902684](https://pubmed.ncbi.nlm.nih.gov/30902684).

1. **[^](#cite_ref-8)** ["Trimeresurus venustus"](https://www.pierrewildlife.com/searchspecies/reptiles/snakes/viperidae/trimeresurusvenustus/). *PierreWildlife*. 2017-05-03. Retrieved 2025-03-18.

1. ^ [***a***](#cite_ref-:2_9-0) [***b***](#cite_ref-:2_9-1) ["Brown-Spotted Green Pit Viper | Thailand Snakes"](https://thailandsnakes.com/brown-spotted-green-pit-viper/). *Thailand Snakes, Snakebite, Herping, Tours, Snake Traps*. 2023-07-13. Retrieved 2025-03-18.

Taxon identifiers Trimeresurus venustus Wikidata: Q3539232 Wikispecies: Trimeresurus venustus CoL: 7D626 GBIF: 2444784 iNaturalist: 30974 IRMNG: 10365421 ITIS: 1058479 IUCN: 191910 NCBI: 232281 Open Tree of Life: 155327 RD: venustus

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