Thai National Parks

Species of Thailand

Eastern Russell's viper

Daboia siamensis

(Malcolm Arthur Smith, 1917)

In Thai: งูแมวเซา, ngu meow sao

Daboia siamensis (Common name: eastern Russell's viper, Siamese Russell's viper, more) is a venomous viper species, which is endemic to parts of Southeast Asia, southern China and Taiwan. It was formerly considered to be a subspecies of Daboia russelii (as Daboia russelli siamensis), but was elevated to species status in 2007.

Description

Dorsally, the color pattern is the same as that of D. russelii, except that the color is more grayish or olive, with small spots between the large spot rows. The venter is suffused with gray posteriorly.

Common names

Common names for D. siamensis include eastern Russell's viper and Siamese Russell's viper.

Previously, other common names were used to describe subspecies that are now part of the synonymy of this species: Indonesian Russell's viper for "limitis", and Formosan Russell's viper for "formosensis".

Geographic range

Daboia siamensis is found in Myanmar, Thailand, Cambodia, China(Guangxi Guangdong), parts of India, Taiwan and Indonesia (Endeh, Flores, east Java, Komodo, Lomblen Islands).

Brown (1973) mentions that D. siamensis can also found in Vietnam, Laos and on the Indonesian island of Sumatra. Ditmars (1937) reportedly received a specimen from Sumatra as well. However, its distribution in the Indonesian archipelago is still being elucidated.

Antivenom

As of 2016, antivenoms for Daboia siamensis were produced in India, Myanmar and Thailand.

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Scientific classification

Kingdom
Animalia
Phylum
Chordata
Subphylum
Vertebrata
Class
Reptilia
Order
Squamata
Suborder
Serpentes
Family
Viperidae
Genus
Daboia
Species
Daboia siamensis

Common names

  • German: Östliche Kettenviper
  • English:
    • Eastern Russell’s viper
    • Siamese Russell's viper
  • Thai: งูแมวเซา, ngu meow sao

Synonyms

  • Daboia russellii limitis, NCBI TAXONOMY (2016)
  • Daboia siamensis, Van Stanley Bartholomew Wallach et al. (2014)
  • Daboia siamensis, Roger Stephen Thorpe et al. (2007)
  • Daboia russelii siamensis, Ermi Zhao (2006)
  • Daboia russellii sic siamensis, Tanya Chan-Ard et al. (1999)
  • Daboia russelii siamensis, Merel J. Cox et al. (1998)
  • Daboia russelli siamensis, WELCH (Multiple authors) (1994)
  • Daboia russelli siamensis, Golay et al. (1993)
  • Vipera russelli burmanus, Maung Maung Aye in P. Gopalakrishnakone & Tan (1987)
  • Vipera russelli siamensis, K. Nakada, F. Nakada, E. Ito & F. Inoue (1984)

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Photos

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Daboia siamensis
Siamese Russell's viper
Siamese Russell's viper

Range Map

Distribution map of Eastern Russell's viper, Daboia siamensis in Thailand
  • Aranyaprathet District, Sa Kaeo
  • Ban Mi District, Lopburi
  • Bang Len District, Nakhon Pathom
  • Bang Nam Priao District, Chachoengsao
  • Bang Pa In District, Phra Nakhon Si Ayutthaya
  • Bo Phloi District, Kanchanaburi
  • Bueng Sam Phan District, Phetchabun
  • Chai Badan District, Lopburi
  • Dan Chang District, Suphan Buri
  • Don Chedi District, Suphan Buri
  • Hankha District, Chainat
  • Huai Kha Khaeng Wildlife Sanctuary
  • Kabin Buri District, Prachinburi
  • Khanu Woralaksaburi District, Kamphaeng Phet
  • Khao Chakan District, Sa Kaeo
  • Khlong Hat District, Sa Kaeo
  • Khlong Khlung District, Kamphaeng Phet
  • Khlong Luang District, Pathum Thani
  • Khok Charoen District, Lopburi
  • Khok Samrong District, Lopburi
  • Ko Chan District, Chonburi
  • Lao Khwan District, Kanchanaburi
  • Lat Yao District, Nakhon Sawan
  • Manorom District, Chainat
  • Mueang Lopburi District, Lopburi
  • Mueang Nakhon Sawan District, Nakhon Sawan
  • Mueang Prachinburi District, Prachinburi
  • Mueang Sa Kaeo District, Sa Kaeo
  • Mueang Uthai Thani District, Uthai Thani
  • Nong Khaem District, Bangkok
  • Nong Mamong District, Chainat
  • Nong Ya Sai District, Suphan Buri
  • Ongkharak District, Nakhon Nayok
  • Phachi District, Phra Nakhon Si Ayutthaya
  • Phanat Nikhom District, Chonburi
  • Phanom Sarakham District, Chachoengsao
  • Phatthana Nikhom District, Lopburi
  • Phayuha Khiri District, Nakhon Sawan
  • Prachantakham District, Prachinburi
  • Sa Bot District, Lopburi
  • Sai Noi District, Nonthaburi
  • Sai Thong Watthana District, Kamphaeng Phet
  • Sanam Chai Khet District, Chachoengsao
  • Sao Hai District, Saraburi
  • Sawang Arom District, Uthai Thani
  • Si Maha Phot District, Prachinburi
  • Si Thep District, Phetchabun
  • Tak Fa District, Nakhon Sawan
  • Takhli District, Nakhon Sawan
  • Tha Tako District, Nakhon Sawan
  • Thanyaburi District, Pathum Thani
  • U Thong District, Suphan Buri
  • Uthai District, Phra Nakhon Si Ayutthaya
  • Wang Nam Yen District, Sa Kaeo
  • Wang Noi District, Phra Nakhon Si Ayutthaya
  • Watthana Nakhon District, Sa Kaeo
  • Wichian Buri District, Phetchabun
Range map of Daboia siamensis in Thailand