Thai National Parks

Snakes of Thailand

Species of Thailand

Long-nosed whip snake

In Thai: งูเขียวปากแหนบ, ngu khiaow pak naenb

Binomial name: Ahaetulla nasuta, Bernard Germain Étienne comte de La Ville-sur-Illon La Cépède, 1789

The green vine snake (Ahaetulla nasuta) ඇහැ‍ටුල්ලා (ahaetulla) in Sinhala, (పచ్చారి పాము) in Telugu, is a slender green tree snake found in India, Sri Lanka, Bangladesh, Burma, Thailand, Cambodia and Vietnam. Not to be confused with Oxybelis fulgidus, "green vine snake" found in Central and South America.


The green vine snake is diurnal and mildly venomous. The reptile normally feeds on frogs and lizards using its binocular vision to hunt. They are slow moving, relying on camouflaging as a vine in foliage. The snake expands its body when disturbed to show a black and white scale marking. Also, they may open their mouth in threat display and point their head in the direction of the perceived threat. There is a widespread myth in parts of southern India that the species uses its pointed head to blind its human victims.

The species is viviparous, giving birth to young that grow within the body of the mother, enclosed within the egg membrane. They may be capable of delayed fertilization (parthenogenesis is rare but not unknown in snakes) as a female in the London zoo kept in isolation from August, 1885 gave birth in August, 1888. The venom is mild and causes swelling. Symptoms will subside within three days.

This article uses material from Wikipedia released under the Creative Commons Attribution-Share-Alike Licence 3.0. Eventual photos shown in this page may or may not be from Wikipedia, please see the license details for photos in photo by-lines.

Site notes

The Thai population of what once was Ahaetulla nasuta is unclear since Mallik et al. 2020 reviewed the species based on genetic analysis of the Indian and Sri Lankan populations. The population in South East Asia needs further research for clarification.

Scientific classification

Ahaetulla nasuta

Common names

  • German:
    • Nasenpeitschennatter
    • Baumschnüffler
  • English:
    • Long-nosed whip snake
    • Long-nosed vine snake
    • Long-nosed tree snake
    • Green vine snake
  • Thai: งูเขียวปากแหนบ, ngu khiaow pak naenb


  • Ahaetulla nasuta, Van Stanley Bartholomew Wallach et al. (2014)
  • Ahaetulla nautus sic, Vyas (2007)
  • Ahaetulla nasutus, R.C. Sharma (2004)
  • Ahaetulla nasuta, Merel J. Cox et al. (1998)
  • Ahaetulla nasuta, Ulrich Manthey & Wolfgang Grossmann (1997)
  • Dryophis nasutus, Malcolm Arthur Smith (1943)
  • Passerita nasuta, Doris Mable Cochran (1930)
  • Dryophis mycterizans rhodonotus, Frank Wall (1921)
  • Dryophis mycterizans isabellinus, Frank Wall (1910)
  • Dryophis mycterizans lepidorostralis, Frank Wall (1908)
  • Dryophis mycterizans rhodogaster, Frank Wall (1908)
  • Dryophis mycterizans cineroventer, Frank Wall (1908)
  • Dryophis mycterizans tephrogaster, Frank Wall (1908)
  • Dryophis mycterizans, George Albert Boulenger (1890)
  • Dryinus fuscus, André Marie Constant Duméril & Gabriel Bibron (1854)
  • Dryinus nasutus, André Marie Constant Duméril & Gabriel Bibron (1854)
  • Dryiophis nasuta, Hermann Schlegel (1837)
  • Dryophis hammatorhynchus, Leopold Fitzinger (1826)
  • Dryinus russellianus, Thomas Bell (1825)
  • Dryinus oxyrhynchus, Thomas Bell (1825)
  • Dryinus nasutus, Blasius Merrem (1820)
  • Ahaetulla mycterizans, Johann Heinrich Friedrich Link (1807)
  • Coluber mycterizans, Patrick Russell (1796)
  • Dryophis nasuta, Bernard Germain de Lacépède (1789)
  • Coluber nasutus, Bernard Germain de Lacépède (1789)


Ahaetulla nasuta - Khao Sam Roi Yot NP
Ahaetulla nasuta (with pointy nose) - Nong Phai District, Phetchabun
Ahaetulla nasuta
Ahaetulla nasuta (juvenile) - Kaeng Krachan District, Phetchaburi
Ahaetulla nasuta - Prachantakham District, Prachin Buri
Ahaetulla nasuta - Prachantakham District, Prachin Buri
Ahaetulla nasuta - Huai Yang Waterfall NP

Range Map

Distribution map of Long-nosed whip snake, Ahaetulla nasuta in Thailand
  • Aranyaprathet District, Sa Kaeo
  • Ban Bueng District, Chonburi
  • Ban Lat District, Phetchaburi
  • Bang Lamung District, Chonburi
  • Bangkok Province
  • Cha-Am District, Phetchaburi
  • Chatuchak District, Bangkok
  • Chum Phuang District, Nakhon Ratchasima
  • Doi Saket District, Chiang Mai
  • Huai Kha Khaeng Wildlife Sanctuary
  • Huai Yang Waterfall National Park
  • Kaeng Krachan District, Phetchaburi
  • Kaeng Krachan National Park
  • Khao Nang Phanthurat Forest Park
  • Khao Sam Roi Yot National Park
  • Khao Yai National Park
  • Khlong Luang District, Pathum Thani
  • Kui Buri District, Prachuap Khiri Khan
  • Lao Khwan District, Kanchanaburi
  • Mueang Kanchanaburi District, Kanchanaburi
  • Mueang Nakhon Ratchasima District, Nakhon Ratchasima
  • Mueang Nonthaburi District, Nonthaburi
  • Mueang Phetchaburi District, Phetchaburi
  • Mueang Phichit District, Phichit
  • Mueang Prachinburi District, Prachinburi
  • Mueang Prachuap Khiri Khan District, Prachuap Khiri Khan
  • Nang Rong District, Buriram
  • Ngao District, Lampang
  • Nong Phai District, Phetchabun
  • Nong Ya Plong District, Phetchaburi
  • Prachantakham District, Prachinburi
  • Sai Yok District, Kanchanaburi
  • Sung Noen District, Nakhon Ratchasima
Range map of Ahaetulla nasuta in Thailand