Thai National Parks

Reptiles of Thailand

Species of Thailand

Keeled rat snake

Binomial name: Ptyas carinata (Albert Charles Lewis Günther, 1858)

Commonly known as the Keeled Rat Snake, Ptyas carinata is a species of colubrid snake. It is found in Indonesia, Myanmar, Malaysia, Thailand, Philippines, Cambodia, Vietnam and Singapore.

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Scientific classification

Ptyas carinata

Common names

  • German: Gekielte Rattenschlange
  • English: Keeled rat snake
  • Thai: งูสิงหางดำ


  • Ptyas carinata, Van Stanley Bartholomew Wallach et al. (2014)
  • Ptyas carinata, Patrick David & Indraneil Das (2004)
  • Zaocys carinatus, Larry Lee Grismer et al. (2002)
  • Zaocys carinatus, Rooijen & Rooijen (2002)
  • Ptyas carinatus, Rudolf Malkmus et al. (2002)
  • Ptyas carinatus, Merel J. Cox et al. (1998)
  • Zaocys carinatus, Ulrich Manthey & Wolfgang Grossmann (1997)
  • Ptyas carinatus, Patrick David & Gernot Vogel (1996)
  • Zaocys carinatus, Alice Georgie Cruickshank Grandison (1978)
  • Zaocys carinatus, Malcolm Arthur Smith (1943)
  • Ptyas carinatus, Frank Wall (1923)
  • Zaocys carinatus, George Albert Boulenger (1893)
  • Zaocys tenasserimensis, William Lutley Sclater (1891)
  • Zaocys (Zapyrus) carinatus, Oskar Boettger (1887)
  • Zaocys carinatus, Albert Charles Lewis Günther (1864)
  • Coryphodon carinatus, Albert Charles Lewis Günther (1858)
  • Ptyas carinatus, Albert Charles Lewis Günther (1858)
  • Zaocys carinatus, Albert Charles Lewis Günther (1858)

Keeled rat 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)

Body/tail pattern

Body/tail pattern

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Distribution map of Keeled rat snake, Ptyas carinata in Thailand

Range map of Ptyas carinata 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.