Xenodontinae

Sibon longifrenis

The Dipsadinae are one occurring in North, Central and South America subfamily of small snakes from the family of snakes ( Colubridae ).

Features

Belonging to the Dipsadinae species are small to medium in size and are 40 to 120 cm long. The body is usually somewhat flattened sides, so that the animals are higher than they are wide. The large, flattened head is in many species club-shaped at a very slender neck. The eyes are large, protrude and have elliptical pupils. The two wings legs are extremely short and parallel. The Mental pit, a pit below the head, which is centrally located between the chin shields and the Gularia missing. The dorsal scales lying directly over the spine are often increased, which correlated with a lower number of scale rows. Unlike other snakes is not reduced, the left, but the right lung at the Dipsadinae. In addition a Tracheallunge for some species.

Many types of Dipsadinae ( Tribus Dipsadini ) feed, similar to the snakes of the Asian family Pareatidae that were previously counted among the Dipsadinae, snails and are referred to in German as a worm snakes. The jaw of the worm snakes is on the molluscs specializes most out of its housing. For this purpose they conduct their lower jaw into the case and take with their front teeth elongated with a twist, the soft parts of the prey and pull it out of the chassis. The maxillary teeth standing on the four tooth-bearing, paired jawbone in parallel rows and front to back smaller and smaller. In comparison to other snakes in the jaws of the worm snakes has a lower mobility.

System

The Dipsadinae include as a subfamily of the large family of snakes ( Colubridae ). Her sister group, and next of kin are the Pseudoxenodontinae. Both together form the sister group of the water snakes ( Natricinae ). Today The original of the subfamily associated Asian genera make up the family Pareatidae and are thus outside the snakes. After pyrone et al. results in the following external system:

Natricinae

Pseudoxenodontinae

Dipsadinae

Scaphiodontophiinae

Calamariinae

Grayiinae

Actual snakes ( Colubrinae )

Genera

  • Alsophis Fitzinger, 1843 Antigua- Slim Snake ( Alsophis antiguae )
  • Jamaica Slim Snake ( Alsophis ater)
  • † Alsophis melanichnus
  • Western hooked nose snake ( Heterodon nasicus )
  • Ialtris haetianus

Tribus Pseudoboini:

  • Clelia Fitzinger, 1826
  • Oxyrhopus Wagler, 1830
  • Phimophis Cope, 1860
  • Pseudoboa Schneider, 1801
  • Rhachidelus Boulenger, 1908
  • Siphlophis Fitzinger, 1843

Tribus Dipsadini (South American worm snakes ):

  • Adelphicos Jan, 1862
  • Amastridium Cope, 1861
  • Atractus Wagler, 1828
  • Chersodromus Reinhardt, 1860
  • Coniophanes Hallowell, 1860
  • Cryophis Bogert & Duellman, 1963
  • Thick -headed snakes ( Dipsas ) Laurenti, 1768
  • Geophis Wagler, 1830
  • Night snakes ( Hypsiglena ) Cope, 1860
  • Giant snakes ( Imantodes ) Dumeril, 1853
  • Cat -eyed snakes ( Leptodeira ) Fitzinger, 1843
  • Coffee snakes ( Ninia ) Girard, 1853
  • Plesiodipsas Harvey, Fuenmayor, Portilla & Rueda - Almonacid, 2008
  • Pseudoleptodeira Taylor, 1938
  • Rhadinaea Cope, 1863
  • Rhadinophanes Myers & Campbell, 1981
  • Sibon Fitzinger, 1826
  • Sibynomorphus Fitzinger, 1843
  • Tantalophis Duellman, 1958
  • Tretanorhinus Dumeril, Bibron & Dumeril, 1854
  • Trimetopon Cope, 1885
  • Urotheca Bibron, 1843

Total includes over 700 species to the Dipsadinae.

Squamata Pareatinae Mussurana Digital Object Identifier
291030
de