Crotalinae

The Crotalinae or crotales form a subfamily Serpent S of the family of the vipéridés . This subfamily was created by Nicolaus Michael Oppel (1782-1820) in 1811.

Description

These snakes are characterized by their hollow body sensitive to the heat and which is localized between the eye and the nostril on each side of the head.

Cer body contains sensory membranes, sensitive to the Infrarouge, i.e. with heat. That makes it possible these predatory to locate their prey thanks to the difference in temperature induced by their presence. For one crotaliné, the Rodent S and the Oiseau X which are only very slightly hotter than the environment are detected even in the most complete darkness. The body gives them the perception depth, therefore distance and enables them to melt with precision on their prey. And as these snakes are of night life and than they drive out with the mounting, this adaptation serves them perfectly.

Only the Boidés developed a similar adaptation.

The form of its head and its fulgurating attacks were worth with the crotale the nickname of " iron-of-lance".

Many species

There are currently 175 Espèce S recognized: 69 in Southeast Asia, and 106 in the new world. Also called crotalinés, they are only the viperidés found in the new world.

The size of the crotalinae goes from small, like the Bothriechis schlegelii , with a maximum length of 50  cm with very large, as the Lachesis transferred , which reaches the imposing size of 3,5  meters and is thus the largest viper on ground.

List kinds

  • Agkistrodon Palisot de Beauvois, 1799.

  • Atropoides Werman, 1992.
  • Bothriechis Peters, 1859.
  • Bothriopsis Peters, 1861.
  • Bothrops Wagler, 1824.
  • Calloselasma Cope, 1860.
  • Cerrophidion Campbell and Lamar, 1992.
  • Crotalus Linnaeus, 1758.
  • Deinagkistrodon Gloyd, 1979.
  • Gloydius Hoge and Romano-Hoge, 1981.
  • Hypnale Fitzinger, 1843.
  • Lachesis Daudin, 1803.
  • Ophryacus Cope, 1887.
  • Ovophis Burger, 1981.
  • Porthidium Cope, 1871.
  • Sistrurus Garman, 1884.
  • Trimeresurus Lacépède, 1804.
  • Tropidolaemus Wagler, 1830.

External bonds

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