Thai National Parks

Reptiles of Thailand

Species of Thailand

Collared reed snake

Binomial name: Calamaria pavimentata (André Marie Constant Duméril, Gabriel Bibron & Auguste Duméril, 1854)

The collared reed snake (Calamaria pavimentata) is a species of colubrid snake found in Asia. In Japan, it is also called Miyara's collared snake.


The rostral is as deep as it is broad, and it is well visible from above. The frontal is longer than broad, shorter than the parietals, and 2.0 to 2.5 times as broad as the supraocular. C. pavimentata has one preocular scale and one postocular scale with four upper labials (the second and fourth are the largest, with the second and third entering the eye). The first pair of lower labials form a suture behind the mental scale. There are two pairs of chin shields, each pair in contact with the other. The scales are in 13 rows. There are 140–182 ventral scales, the anal scale is entire, and it has 13–27 subcaudal scales, and a pointed tail.

The collared reed snake is reddish-brown above, with five dark longitudinal lines or series of spots. The nape is dark brown and separated from the back by a yellow collar. A pair of yellow spots is seen at the base and another at the end of the tail. The lower parts show a uniform yellow with a dark line along the tail in the Burmese and Javan specimens, obscured with brown mottlings or brown with lighter borders in C. p. siamensis.

The total length of the body is 12.5 cm with a 0.6-in (1.5-cm) tail.


This snake can be found in India (Assam), Myanmar, Thailand, Laos, Cambodia, Vietnam, west Malaysia (including Pulau Tioman), Indonesia, south and southwest China (including Hainan), Taiwan, and Japan (Ryukyu Islands).

Type locality: Java, Indonesia

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Scientific classification

Calamaria pavimentata

Common names

  • German: Braune Riednatter
  • English: Collared reed snake
  • Thai: งูพงอ้อท้องเหลือง


  • Calamaria pavimentata miarai (Takara, 1962) - Japan (Yonagunijima)
  • Calamaria pavimentata pavimentata (André Marie Constant Duméril, Gabriel Bibron & Auguste Duméril, 1854) - India, West Malaysia, Thailand, Laos, Vietnam, Cambodia, Myanmar, China, Taiwan, Japan


  • Calamaria pavimentata, Van Stanley Bartholomew Wallach et al. (2014)
  • Calamaria pavimentata miyarai, Richard C Goris & Norio Maeda (2004)
  • Calamaria pavimentata, Robert Frederick Inger & Harold Knight Voris (2001)
  • Calamaria pavimentata miyarai, Hidetoshi Ota (2000)
  • Calamaria pavimentata, Indraneil Das (1996)
  • Calamaria pavimentata miarai, Takara (1962)
  • Calamaria uniformis, Malcolm Arthur Smith (1943)
  • Calamaria pavimentata annamensis, René Léon Bourret (1937)
  • Calamaria pavimentata pavimentata, Clifford H. Pope (1935)
  • Calamaria pavimentata banaensis, René Léon Bourret (1934)
  • Calamaria pavimentata formosana, Moichirō Maki (1931)
  • Calamaria pavimentata var. uniformis, Malcolm Arthur Smith (1921)
  • Calamaria berezowskii, Leonhard Hess Stejneger (1907)
  • Calamaria berezowskii, Albert Charles Lewis Günther (1896)
  • Calamaria quadrimaculata, Giorgio Jan (1865)
  • Calamaria siamensis, Albert Charles Lewis Günther (1864)
  • Calamaria pavimentata, André Marie Constant Duméril, Gabriel Bibron & Auguste Duméril (1854)
  • Calamaria quadri maculata, André Marie Constant Duméril, Gabriel Bibron & Auguste Duméril (1854)

Collared reed snake 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)

Calamaria pavimentata

Calamaria pavimentata

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Calamaria pavimentata distribution

Calamaria pavimentata distribution

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Distribution map of Collared reed snake, Calamaria pavimentata in Thailand

Range map of Calamaria pavimentata 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.