Thai National Parks

Reptiles of Thailand

Species of Thailand

Red-necked keelback

Binomial name: Rhabdophis subminiatus (Hermann Schlegel, 1837)

The red-necked keelback (Rhabdophis subminiatus) is a species of snake in the family Colubridae.

Description

The snake has a greenish hue with red and yellow regions near the head. It grows to 70 to 90 cm (28-35 inches) in length.

Habitat and behavior

It generally lives near ponds, where it consumes frogs and fish.

Venom

Rhabdophis subminiatus is a rear-fanged species and was previously thought to be harmless. However, following one fatal and several near-fatal envenomations, the toxicity of its venom was investigated. As a result, it has recently been reclassified as a dangerous species. These snakes need to bite and hold on, or, repeatedly bite to have any effect on humans as they are considered rear-fanged. Meaning a chewing action facilitates envenomation as the venom ducts open to fangs that are posterior in the oral cavity.

Distribution

The red-necked keelback can be found in the following areas of the world:

  • Indonesia (Sumatra, Borneo, Java, Sulawesi ?)
  • Thailand, Vietnam, Cambodia, Laos, Burma
  • West Malaysia, Bhutan, Bangladesh, Nepal
  • India (Assam, West Bengal (Jalpaiguri district), Sikkim; Arunachal Pradesh (Chimpu, Itanagar - Papum Pare district)), Mizoram (, World Bank Road)
  • China (Yunnan, Guangxi, Guangdong, Fujian, Hong Kong, Hainan)

The keelback of the race 'helleri' can be found in the following locations:

  • Bangladesh
  • Hong Kong
  • India (West Bengal-Jalpaiguri)
  • Laos
  • Myanmar
  • Nepal
  • People's Republic of China
  • Thailand
  • North Vietnam

This article uses material from the Wikipedia released under the Creative Commons Attribution-Share-Alike Licence 3.0. Please see license details for photos in photo by-lines.

Site notes

This species has nuchal glands, one of very few species of snakes in the world which is both venomous and poisonous. The only other species in Thailand which has nuchal glands is Rhabdophis nigrocinctus in same genus.

Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Reptilia
Order
Squamata
Suborder
Serpentes
Family
Colubridae
Genus
Rhabdophis
Species
Rhabdophis subminiatus

Common names

  • German: Rothals-Wassernatter
  • English: Red-necked keelback
  • Thai: งูลายสาบคอแดง (Ngu lai sap kho daeng)

Subspecies

  • Rhabdophis subminiatus helleri (Karl Patterson Schmidt, 1925)
  • Rhabdophis subminiatus subminiatus (Hermann Schlegel, 1837)

Synonyms

  • Rhabdophis subminiatus, Van Stanley Bartholomew Wallach et al. (2014)
  • Rhabdophis subminiatus helleri, Nguyen Van Sang et al. (2009)
  • Rhabdophis subminiata, R. C. Sharma (2004)
  • Rhabdophis subminiatus, Merel J. Cox et al. (1998)
  • Rhabdophis subminiatus, Ulrich Manthey & Wolfgang Grossmann (1997)
  • Rhabdophis subminiatus helleri, Ermi Zhao et al. (1986)
  • Rhabdophis subminiatus subminiatus, Edward Harrison Taylor (1965)
  • Rhabdophis subminiata helleri, Edward Harrison Taylor (1965)
  • Rhabdophis subminiata, E. V. Malnate (1960)
  • Natrix subminiata, Malcolm Arthur Smith (1943)
  • Rhabdophis himalayanus laobaoensis, fide Malcolm Arthur Smith (1943)
  • Rhabdophis subminiatus subminiatus, René Léon Bourret (1936)
  • Natrix subminiata subminiata, R. Mell (1931)
  • ?Natrix subminiata hongkongensis, R. Mell (1931)
  • Natrix subminiata helleri, R. Mell (1931)
  • Rhabdophis subminiatus helleri, Karl Patterson Schmidt (1925)
  • Natrix helleri, Karl Patterson Schmidt (1925)
  • Natrix subminiata, Thomas Barbour (1912)
  • Tropidonotus subminiatus, Frank Wall (1908)
  • Pseudoxenodon intermedius, Axel Johan Einar Lönnberg (1899)
  • Tropidonotus subminiatus, George Albert Boulenger (1893)
  • ? Tropidonotus manadensis, Albert Charles Lewis Günther (fide Van Stanley Bartholomew Wallach) (1873)
  • Tropidonotus subminiatus, Albert Charles Lewis Günther (1858)
  • Amphiesma subminiatum, André Marie Constant Duméril & Gabriel Bibron (1854)
  • Rhabdophis subminiatus, Leopold Fitzinger (1843)
  • Tropidonotus subminiatus, Hermann Schlegel (1837)
  • Natrix subminiatus, Friedrich Boie (1827)

Red-necked keelback is found in following locations in Thailand

Please note that this non-official list is not complete nor necessarily accurate. This list is a summary of checklists from other websites, blogs, publications, photo/videos published on various websites or our own findings. We appreciate your contributions with photo proof.

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Red-necked keelback

Red-necked keelback

Creative Commons Attribution-ShareAlike 4.0 International Thai National Parks

Rhabdophis subminiatus

Rhabdophis subminiatus

Creative Commons Attribution-ShareAlike 4.0 International Thai National Parks

Rhabdophis subminiatus

Rhabdophis subminiatus

Creative Commons Attribution-ShareAlike 4.0 International Thai National Parks

Red-necked keelback

Red-necked keelback

Creative Commons Attribution-ShareAlike 4.0 International Thai National Parks

Distribution map of Red-necked keelback, Rhabdophis subminiatus in Thailand

Range map of Rhabdophis subminiatus in Thailand

Important note; our range maps are generated automatically based on very limited data we have about the protected sites, the data is not necessarily accurate. Please help us to improve our range maps by sharing your findings/knowledge.