Thai National Parks

Species of Thailand

Assam mountain snake

Plagiopholis nuchalis, George Albert Boulenger, 1893

(In Thai: งูหัวลายลูกศร, ngu hua lai look sorn)

Plagiopholis nuchalis, commonly known as the Assam mountain snake, is a species of colubrid snake. It is found in Yunnan (China), Myanmar, Thailand, Laos, possibly also in Assam region of India and in Vietnam. Specimens from Yunnan have been described as the subspecies Plagiopholis nuchalis kunmingensis.

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Scientific classification

Plagiopholis nuchalis

Common names

  • German: Indische Halsbandnatter
  • English:
    • Assam mountain snake
    • Assamese mountain snake
  • Thai: งูหัวลายลูกศร, ngu hua lai look sorn


  • Plagiopholis nuchalis, Van Stanley Bartholomew Wallach et al. (2014)
  • Plagiopholis nuchalis, Frank Tillack et al. (2006)
  • Plagiopholis nuchalis, Merel J. Cox et al. (1998)
  • Oligodon kunmingensis, Zi-Tong Kou & Jie-Yun Wu (1993)
  • Plagiopholis nuchalis, Malcolm Arthur Smith (1943)
  • Plagiopholis nuchalis, Malcolm Arthur Smith (1940)
  • Trirhinopholis nuchalis, Frank Wall (1921)
  • Oligodon evansi, Frank Wall (1913)
  • Trirhinopholis nuchalis, George Albert Boulenger (1893)

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)


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Plagiopholis nuchalis
Plagiopholis nuchalis
Plagiopholis nuchalis

Range Map

Distribution map of Assam mountain snake, Plagiopholis nuchalis in Thailand
  • Chiang Dao Wildlife Sanctuary
  • Doi Chang
  • Doi Inthanon National Park
  • Doi Khun Tan National Park
  • Doi Pha Hom Pok National Park
  • Doi Phu Kha National Park
  • Doi Suthep - Pui National Park
  • Hot District, Chiang Mai
  • Kaeng Krachan National Park
  • Khao Yai National Park
  • Mae Chai District, Phayao
  • Mae Fa Luang District, Chiang Rai
  • Mae La Noi District, Mae Hong Son
  • Mae On District, Chiang Mai
  • Mae Suai District, Chiang Rai
  • Mae Taeng District, Chiang Mai
  • Mae Wong National Park
  • Mueang Chiang Mai District, Chiang Mai
  • Mueang Pan District, Lampang
  • Omkoi District, Chiang Mai
  • Phu Hin Rong Kla National Park
  • Phu Khiao Wildlife Sanctuary
  • Phu Luang Wildlife Sanctuary
  • Sangkhla Buri District, Kanchanaburi
Range map of Plagiopholis nuchalis in Thailand