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Montane trinket snake Coelognathus helena monticollaris by Ashahar alias Krishna Khan Amravati.jpg
Montane Trinket Snake (Coelognathus helena monticollaris)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Coelognathus
Fitzinger, 1843

Coelognathus is a genus of 7 ratsnakes from South and South East Asia that were formerly assigned to the genus Elaphe. Based on morphological evidence and protein similarities, in 2001 Helfenberger re-validated the name Coelognathus that had originally been proposed by Leopold Fitzinger in 1843.[1] The distinction between Coelognathus and Elaphe was further supported by mitochondrial DNA sequence and additional morphological evidence in 2005.[2]


The following species are recognized as being valid:[3]

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Coelognathus.


  1. ^ Helfenberger N. (2001). "Phylogenetic relationships of Old World ratsnakes based on visceral organ topography, osteology, and allozyme variation". Russian Journal of Herpetology. 8: 1–62.
  2. ^ Utiger U, Schätti B, Helfenberger N (2005). "The Oriental colubrine genus Coelognathus Fitzinger, 1843, and classification of Old and New World racers and ratsnakes (Reptilia, Squamata, Colubridae, Colubrinae)" (PDF). Russian Journal of Herpetology. 12 (1): 32–53.
  3. ^ "Coelognathus ". The Reptile Database.

Further reading[edit]

  • Fitzinger L. 1843. Systema Reptilium, Fasciculus Primus, Amblyglossae. Vienna: Braumüller & Seidel. 106 pp. + indices. (Coelognathus, new genus, p. 26). (in Latin).