Thai National Parks

Species of Thailand

Banded krait

Bungarus fasciatus, Johann Gottlob Theaenus Schneider, 1801

(In Thai: งูสามเหลี่ยม, ngu saam liam)

The banded krait (Bungarus fasciatus) is a species of elapid snake found on the Indian Subcontinent and in Southeast Asia. It is one of the largest kraits, with a maximum length up to 2.1 m.


B. fasciatus is easily identified by its alternate black and yellow crossbands, its triangular body cross section, and the marked vertebral ridge consisting of enlarged vertebral shields along its body. The head is broad and depressed. The eyes are black. It has arrowhead-like yellow markings on its otherwise black head and has yellow lips, lores, chin, and throat.

The longest banded krait measured was 2.25 m long, but normally the length encountered is 1.8 m.

The snake has an entire anal plate and single subcaudals. The tail is small and ends like a fingertip, generally being one-tenth the length of the snake.

Distribution and habitat

The banded krait occurs in the whole of the Indo-Chinese subregion, the Malaysian peninsula and archipelago, and southern China. The species is common in Assam and Tripura of India and Bangladesh, but becomes progressively uncommon westwards in India.

It has been recorded eastwards from central India through Myanmar, Cambodia, Thailand, Laos, Vietnam, and southern China (including Hong Kong), Philippines to Malaysia and the main Indonesian islands of Borneo (Java and Sumatra), as well as Singapore.

In India, it has been recorded from Andhra Pradesh, Bihar, Chhattisgarh, Jharkhand, Madhya Pradesh, Maharashtra, Northeast India, Odisha, Tamil Nadu, and West Bengal. It has recently been recorded from Hassan District in Karnataka, also.

Banded kraits may be seen in a variety of habitats, ranging from forests to agricultural lands. They inhabit termite mounds and rodent holes close to water, and often live near human settlement, especially villages, because of their supply of rodents and water. They prefer the open plains of the countryside. The banded krait has been found in Myanmar up to an altitude of 5000 feet.


Banded kraits are shy, not typically seen, and are mainly nocturnal. When harassed, they will usually hide their heads under their coils, and do not generally attempt to bite, though at night they are much more active and widely considered to be more dangerous then.

During the day, they lie up in grass, pits, or drains. The snakes are lethargic and sluggish even under provocation. They are most commonly seen in the rains.


The banded krait feeds mainly on other snakes, but is also known to eat fish, frogs, skinks, and snake eggs. Among the snakes taken by banded kraits are: -

  • Chequered keelback Xenochrophis piscator
  • Buff-striped keelback Amphiesma stolatum
  • Rat snake or dhaman Ptyas mucosus
  • Indo-Chinese rat snake Ptyas korros
  • Cat snake Boiga trigonata.

The prey is swallowed head first, after it has been rendered inactive by the venom.

Breeding habits

Little is known of its breeding habits. In Myanmar, a female has been dug out while incubating a clutch of eight eggs, four of which hatched in May. Young have been recorded to measure 298 to 311 mm on hatching. The snake is believed to become adult in the third year of its life, at an approximate length of 914 mm.


The venom of the banded krait mainly contains neurotoxins (pre- and postsynaptic neurotoxins) with values of 2.4 mg/kg—3.6 mg/kg SC, 1.289 mg/kg IV and 1.55 mg/kg IP. The quantity of venom delivered averages out at 20–114 mg. Engelmann and Obst (1981) list the venom yield at 114 mg (dry weight). The major clinical effects caused by the venom of this species include vomiting, abdominal pain, diarrhoea, dizziness, etc. Severe envenomation can lead to respiratory failure and death may occur due to suffocation. Few authenticated records of human beings having been bitten are available, one such record was the accidental bite resulting in the death of the world-renowned herpetologist Joseph Bruno Slowinski.

A clinical toxicology study gives an untreated mortality rate of 1—10%, which may be because contact with humans is rare and when bites do occur, the rate of envenomation when biting defensively is thought to be very low. Currently, a polyvalent antivenom is available in India.

Common names
  • Assamese language "Gowala"
  • Bengali শাখামুটি sankani, shankhamooti shaanp and Rajsap or Kings snake in Birbhum District
  • Hindi - ahiraaj saamp
  • Indonesian - welang
  • Malayalam - vellikkattan
  • Marathi - patteri manyar, Agya Manyar, Sataranjya
  • Odia - rana(रणा)
  • Tamil - kattu viriyan (கட்டுவிரியன்), yennai viriyan, yettadi viriyan
  • Telugu - Katla Paamu or bangaru paamu meaning the golden snake: The scientific name of the genus is also derived from the Telugu word bangarum meaning "gold", referring to the yellow rings around its body.
  • Tulu - Kadambale
  • Thai - ngu sam liam, meaning the triangular snake

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Scientific classification

Bungarus fasciatus

Common names

  • German: Gelbgebänderter Krait
  • English: Banded krait
  • Thai:
    • งูสามเหลี่ยม, ngu saam liam
    • งูปล้องทอง (ใต้), ngu plong thong (South Thailand)


  • Bungarus fasciatus, Van Stanley Bartholomew Wallach et al. (2014)
  • Bungarus fasciatus, Thomas Ziegler (2002)
  • Bungarus fasciatus, Merel J. Cox et al. (1998)
  • Bungarus fasciatus, Ulrich Manthey & Wolfgang Grossmann (1997)
  • Bungarus fasciatus, Kenneth R. G. Welch (1994)
  • Bungarus fasiatus (sic), John Ernest Werler & Hugh L. Keegan (1963)
  • Bungarus fasciatus, Malcolm Arthur Smith (1943)
  • Bungarus fasciatus fasciatus, R. Mell (1931)
  • Bungarus fasciatus insularis, R. Mell (1930)
  • Bungarus fasciatus bifasciatus, R. Mell (1929)

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)


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Bungarus fasciatus - Kra Buri District, Ranong
Bungarus fasciatus - Khao Chamao - Khao Wong National Park
Bungarus fasciatus - Prachantakham District, Prachin Buri
Bungarus fasciatus - Prachantakham District, Prachin Buri
Bungarus fasciatus - Kra Buri District, Ranong

Range Map

Distribution map of Banded krait, Bungarus fasciatus in Thailand
  • Ban Bueng District, Chonburi
  • Ban Hong District, Lamphun
  • Ban Lat District, Phetchaburi
  • Ban Na San District, Surat Thani
  • Bang Kruai District, Nonthaburi
  • Bangkok Noi District, Bangkok
  • Bangkok Yai District, Bangkok
  • Bo Rai District, Trat
  • Bung Khla District, Bueng Kan
  • Chai Prakan District, Chiang Mai
  • Chiang Dao District, Chiang Mai
  • Chiang Kham District, Phayao
  • Doi Saket District, Chiang Mai
  • Doi Suthep - Pui National Park
  • Hat Yai District, Songkhla
  • Hot District, Chiang Mai
  • Huai Kha Khaeng Wildlife Sanctuary
  • Kaeng Krachan District, Phetchaburi
  • Kaeng Tana National Park
  • Kantharawichai District, Maha Sarakham
  • Kap Choeng District, Surin
  • Khanom District, Nakhon Si Thammarat
  • Khao Chaison District, Phatthalung
  • Khao Chamao - Khao Wong National Park
  • Khao Khitchakut National Park
  • Khao Laem Ya - Mu Ko Samet National Park
  • Khao Saming District, Trat
  • Khao Tha Petch Wildlife Conservation and Developme
  • Khao Yai National Park
  • Khlong Nakha Wildlife Sanctuary
  • Kho Wang District, Yasothon
  • Khok Pho District, Pattani
  • Khong Chiam District, Ubon Ratchathani
  • Kra Buri District, Ranong
  • Kuchinarai District, Kalasin
  • Lan Saka District, Nakhon Si Thammarat
  • Lang Suan District, Chumphon
  • Mae Ai District, Chiang Mai
  • Mae Chai District, Phayao
  • Mae Mo District, Lampang
  • Mae On District, Chiang Mai
  • Mae Rim District, Chiang Mai
  • Mae Sai District, Chiang Rai
  • Mae Taeng District, Chiang Mai
  • Mae Tha, Lamphun District, Lamphun
  • Mae Wong National Park
  • Mueang Amnat Charoen District, Amnat Charoen
  • Mueang Chanthaburi District, Chanthaburi
  • Mueang Chiang Mai District, Chiang Mai
  • Mueang Chiang Rai District, Chiang Rai
  • Mueang Chumphon District, Chumphon
  • Mueang Kalasin District, Kalasin
  • Mueang Lampang District, Lampang
  • Mueang Lamphun District, Lamphun
  • Mueang Loei District, Loei
  • Mueang Nakhon Nayok District, Nakhon Nayok
  • Mueang Nakhon Pathom District, Nakhon Pathom
  • Mueang Nakhon Ratchasima District, Nakhon Ratchasima
  • Mueang Nakhon Si Thammarat District, Nakhon Si Thammarat
  • Mueang Narathiwat District, Narathiwat
  • Mueang Nong Khai District, Nong Khai
  • Mueang Phayao District, Phayao
  • Mueang Phichit District, Phichit
  • Mueang Phrae District, Phrae
  • Mueang Rayong District, Rayong
  • Mueang Roi Et District, Roi Et
  • Mueang Surat Thani District, Surat Thani
  • Mueang Surin District, Surin
  • Mueang Udon Thani District, Udon Thani
  • Mueang Uthai Thani District, Uthai Thani
  • Na Wa District, Nakhon Phanom
  • Nam Nao National Park
  • Namtok Phlio National Park
  • Nong Bua Daeng District, Chaiyaphum
  • Nong Chok District, Bangkok
  • Nong Han District, Udon Thani
  • Nong Na Kham District, Khon Kaen
  • Nong Phok District, Roi Et
  • Nong Wua So District, Udon Thani
  • Nopphitam District, Nakhon Si Thammarat
  • Pa Sang District, Lamphun
  • Pai District, Mae Hong Son
  • Pak Phanang District, Nakhon Si Thammarat
  • Pak Thong Chai District, Nakhon Ratchasima
  • Phrai Bueng District, Sisaket
  • Phrao District, Chiang Mai
  • Phrom Khiri District, Nakhon Si Thammarat
  • Phrom Phiram District, Phitsanulok
  • Phu Khiao Wildlife Sanctuary
  • Phu Luang Wildlife Sanctuary
  • Phu Si Than Wildlife Sanctuary
  • Phu Sing District, Sisaket
  • Phu Suan Sai National Park
  • Phu Wua Wildlife Sanctuary
  • Pla Pak District, Nakhon Phanom
  • Pluak Daeng District, Rayong
  • Prachantakham District, Prachinburi
  • Pua District, Nan
  • Rat Burana District, Bangkok
  • Rattaphum District, Songkhla
  • Ron Phibun District, Nakhon Si Thammarat
  • Sadao District, Songkhla
  • San Kamphaeng District, Chiang Mai
  • San Pa Tong District, Chiang Mai
  • San Sai District, Chiang Mai
  • Seka District, Bueng Kan
  • Si Banphot District, Phatthalung
  • Si Mueang Mai District, Ubon Ratchathani
  • Si Samrong District, Sukhothai
  • Si Satchanalai District, Sukhothai
  • Sichon District, Nakhon Si Thammarat
  • Sirindhorn Peat Swamp Forest
  • So Phisai District, Bueng Kan
  • Su-ngai Kolok District, Narathiwat
  • Tak Bai District, Narathiwat
  • Tha Mai District, Chanthaburi
  • Tha Sae District, Chumphon
  • Tha Sala District, Nakhon Si Thammarat
  • Tha Song Yang District, Tak
  • Tha Takiap District, Chachoengsao
  • Tha Tum District, Surin
  • Tha Yang District, Phetchaburi
  • Thung Yai Naresuan Wildlife Sanctuary
  • Wang Nam Yen District, Sa Kaeo
  • Wang Saphung District, Loei
  • Warin Chamrap District, Ubon Ratchathani
  • Wiang Pa Pao District, Chiang Rai
  • Yaha District, Yala
  • Yang Talat District, Kalasin
  • Yod Dom Wildlife Sanctuary
Range map of Bungarus fasciatus in Thailand