|Dice snake, Natrix tessellata|
28, see text
The Natricinae are a subfamily of the Colubridae family of snakes, which comprises 28 genera. Members include many very common snake species, such as the European grass snakes, and the North American water snakes and garter snakes. Some members of the subfamily are known as keelbacks, because their dorsal scales exhibit strong keeling.
Natricine snakes are found in Africa, Asia, Europe, and North America as far south as Costa Rica. A single species, Tropidonophis mairii, reaches Australia. Although the highest diversity is in North America, the oldest members are in Asia and Africa, suggesting an Old World origin for the group. Most species are semi-aquatic and feed on fish and amphibians, although a few are semi-fossorial or leaf-litter snakes that feed on invertebrates. Most species are harmless to humans, but a few (e.g. Thamnophis sirtalis, Thamnophis elegans) are capable of inflicting bites that can result in local, non-life-threatening symptoms, and at least two members of the genus Rhabdophis (R. tigrinus and R. subminiatus are capable of inflicting life-threatening bites to humans, even though they have only enlarged, ungrooved fangs in the back of the mouth.
- Adelophis Dugès, 1879
- Afronatrix Rossman & Eberle, 1977
- Amphiesma Duméril, Bibron & Duméril, 1854
- Amphiesmoides Malnate, 1961
- Anoplohydrus Werner, 1909
- Aspidura Wagler, 1830
- Atretium Cope, 1861
- Balanophis Smith, 1938
- Clonophis Cope, 1889
- Haldea Baird & Girard, 1853
- Hebius Thompson, 1913
- Herpetoreas Günther, 1860
- Hologerrhum Günther, 1858
- Hydrablabes Boulenger, 1891
- Hydraethiops Günther, 1872
- Iguanognathus Boulenger, 1898
- Isanophis David, Pauwels, Nguyen & Vogel, 2015
- Liodytes Cope, 1885
- Limnophis Günther, 1865
- Lycognathophis Boulenger, 1893
- Macropisthodon Boulenger, 1893
- Natriciteres Loveridge, 1953
- Natrix Laurenti, 1768
- Nerodia Baird & Girard, 1853
- Opisthotropis Günther, 1872
- Parahelicops Bourret, 1934
- Pararhabdophis Bourret, 1934
- Paratapinophis Angel, 1929
- Regina Baird & Girard, 1853
- Rhabdophis Fitzinger, 1843
- Seminatrix Cope. 1895
- Sinonatrix Rossman & Eberle, 1977
- Storeria Baird & Girard, 1853
- Thamnophis Fitzinger, 1843
- Trachischium Günther, 1858
- Tropidoclonion Cope, 1860
- Tropidonophis Jan, 1863
- Virginia Baird & Girard, 1853
- Xenochrophis Günther, 1864
In addition, the following genera are often placed here, but may belong elsewhere:
- Weinstein, S. A.; Warrell, D. A.; White, J.; Keyler, D. E. (2011). Venomous bites from non-venomous snakes: A critical analysis of risk and management of “colubrid” snake bites. London: Elsevier.
- Pyron, R. Alexander; et al. (2011). "The phylogeny of advanced snakes (Colubroidea), with discovery of a new subfamily and comparison of support methods for likelihood trees" (PDF). Molecular Phylogenetics and Evolution. 58 (2): 329–342. Archived from the original (PDF) on 3 October 2013.
- "Natricinae". The Reptile Database, Zoological Museum Hamburg.
- Dowling, Herndon G. & Jenner, Janann V. (1988). Snakes of Burma: Checklist of reported species and bibliography. Smithsonian Herpetological Information Service #76. Washington, D.C.: Division of Amphibians and Reptiles, National Museum of Natural History, Smithsonian Institution. OCLC 23345387.
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