Selasa, 26 Mei 2015

Common names: ground rattlesnakes, pigmy rattlesnakes, massasaugas.

Sistrurus is a genus of venomous pit vipers found in Canada, the United States and Mexico. The name is a Latinized form of the Greek word for "tail rattler" (Σείστρουρος, Seistrouros) and shares its root with the ancient Egyptian musical instrument, the sistrum, a type of rattle. Three species are currently recognized.

Description


Sistrurus

Sistrurus species differ from the larger rattlesnakes of the genus Crotalus in a number of ways. They are smaller in size, but also their scalation is different: Sistrurus species have nine large head plates (same as Agkistrodon), whereas with Crotalus (and almost all other viperids) the head is mostly covered with a large number of smaller scales. Sistrurus species have a relatively small rattle that produces more of a high-pitched, buzzing sound than a rattle, like Crotalus.

Geographic range


Sistrurus

Found in southeastern Canada, the eastern and northwestern United States, as well as isolated populations in northern and central Mexico.

Venom


Sistrurus

Although bites from Sistrurus species are regarded as less dangerous to humans than those from Crotalus rattlesnakes, primarily due to their lower venom yield, every venomous snake bite should be considered serious and prompt medical treatment should always be sought.

Species


Sistrurus

† Type species.

See also


Sistrurus
  • List of crotaline species and subspecies
  • Crotalinae by common name
  • Crotalinae by taxonomic synonyms
  • Snakebite

References


Sistrurus

Further reading


Sistrurus
  • Hubbs, Brian and Brendan O'Connor. 2012. A Guide to the Rattlesnakes and other Venomous Serpents of the United States. Tricolor Books. Tempe, Arizona. 129 pp. ISBN 978-0-9754641-3-7.

External links


Sistrurus
  • Sistrurus at the Reptarium.cz Reptile Database. Accessed 5 December 2007.
  • Sistrurus at Herpbreeder.com. Accessed 5 December 2007.

Sistrurus
 
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