Thai National Parks

Reptiles of Thailand

Species of Thailand

Copperhead racer

Binomial name: Coelognathus radiatus (Friedrich Boie, 1827)

The radiated ratsnake, copperhead rat snake, or copper-headed trinket snake (Coelognathus radiata) is a nonvenomous species of colubrid snake.


  • Indonesia (Sumatra, Bangka, Borneo/Kalimantan, Java),
  • Malaysia and Brunei (Malaya and East Malaysia); Borneo,
  • Singapore Island,
  • Burma (Myanmar),
  • Thailand (including Phuket),
  • Laos, Cambodia, Vietnam,
  • India (Assam, Arunachal Pradesh (Miao - Changlang district, Chessa, Chimpu, Itanagar - Papum Pare district) Captain, pers. comm.),
  • Bangladesh, Nepal,
  • South China (Fujian, Yunnan, Guangxi, Guangdong, Hong Kong),
  • Nepal

Type locality: Java (Boie, 1827)

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Scientific classification

Coelognathus radiatus

Common names

  • German: Strahlennatter
  • English: Copperhead racer, Copperhead rat snake, Radiated rat snake, Copper-headed trinket snake


  • Coelognathus radiatus, Van Stanley Bartholomew Wallach et al. (2014)
  • Elaphe radiatus, T.S.N. Murthy (2010)
  • Coelognathus radiata, Thomas Ziegler et al. (2007)
  • Coelognathus radiatus, Andreas Gumprecht (2003)
  • Elaphe radiata, Olivier S.G. Pauwels et al. (2003)
  • Coelognathus radiatus, Winchell (2003)
  • Coelognathus radiatus, Urs Utiger et al. (2002)
  • Elaphe radiata, Thomas Ziegler (2002)
  • Coelognathus radiatus, Andreas Gumprecht (2000)
  • Elaphe radiata, James Draper Lazell et al. (1999)
  • Elaphe radiata, Tanya Chan-Ard et al. (1999)
  • Elaphe radiata, Merel J. Cox et al. (1998)
  • Elaphe radiata, Ulrich Manthey & Wolfgang Grossmann (1997)
  • Elaphe radiata, Klaus-Dieter Schulz (1996)
  • Elaphe radiata, Malcolm Arthur Smith (1943)
  • Coelognathus radiatus, Doris Mable Cochran (1930)
  • Elaphe radiata, Clifford H. Pope (1929)
  • Elaphe radiata, Thomas Barbour (1912)
  • Coluber radiatus, Frank Wall (1908)
  • Coluber (Compsosoma) radiatus, Salomon Müller (1895)
  • Coluber radiatus, George Albert Boulenger (1894)
  • Compsosoma radiatum, Ferdinand Stoliczka (1870)
  • Elaphis radiatus, JAN (Multiple authors) (1863)
  • Spilotes radiatus, Albert Charles Lewis Günther (1858)
  • Elaphis (Compsosoma) radiatum, Pieter Bleeker (1857)
  • Compsosoma radiatum, André Marie Constant Duméril & Gabriel Bibron (1854)
  • Elaphis radiatus, André Marie Constant Duméril (1853)
  • Plagiodon radiata, André Marie Constant Duméril (1853)
  • Coelognathus radiata, Leopold Fitzinger (1843)
  • Coluber quadrifasciatus, Theodore Edward Cantor (1839)
  • Tropidonotus quinque, Theodore Edward Cantor (1839)
  • Coluber radiatus, Hermann Schlegel (1837)
  • Coluber radiatus, Friedrich Boie (1827)

Copperhead racer 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.

Distribution map of Copperhead racer, Coelognathus radiatus in Thailand

Range map of Coelognathus radiatus 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.