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Systematics or Phylogenetics

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The overall appearance of the Australasian Enhydris polylepis suggests it is related to the Enhydris of southeast Asia which has smooth dorsal scales, the nasals scales in contact, and parietal scales that are entire (Gyi, 1970). Hypsirhina polylepis Fisher, was described on the basis of a specimen from the Fly River of Papua New Guinea. Ogilby (1891) described Pseudoferania macleayi from Queensland’s Herbert River, and Boulenger (1896) placed macleayi in Hypsirhina and Kinghorn (1929) placed macleayi in the synonymy of polylepis and assigned polylepis to Enhydris. However, using DNA sequence data from three mitochondrial genes and one nuclear gene, Alfaro et al. (2008) have clearly shown that polylepis is not part of the Southeast Asian Enhydris, but part of a Australasian clade which includes Myron. Morphological support for this relationship can be found in the enlarged occipital scales and upper labials 2–3 or 2–4 at the loreal. Additionally the weekly keeled scales on the posterior body of P. polylepis do not occur in any Southeast Asian taxa, but do occur in Myron and Djokoiskandarus. Murphy (2011) resurrected the genus Pseudoferania for this species.
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Distribution

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Continent: Asia Australia
Distribution: Papua New Guinea, Indonesia (Irian Jaya) [J. Pilgrim, pers. comm.], Australia (North Territory, Queensland)
Type locality: Fly river, Western Province
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ReptileDB

Pseudoferania

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Pseudoferania is a genus of snake in the family Homalopsidae. The genus is monotypic, containing the sole species Pseudoferania polylepis (MacLeay's water snake).[2] The snake is found in Australia and New Guinea.

Description

MacLeay's water snake is a largely nocturnal[3] species that is typically found in coastal Northern Territory. The water snakes spend most of their time in or near water where they feed; they will only leave to bask in the sun or breed. They are found mostly in freshwater lagoons, swamps and creeks and can also be found sheltering in vegetation near water. Their range increases markedly during wet season flooding.[3] Their most defining characteristic is their stout bodies and strongly keeled scales. In terms of breeding, water snakes are viviparous which means that they give birth to up to 15 [3] live offspring instead of laying eggs. They are a mildly venomous species with rear-facing fangs.[4]

References

  1. ^ Pseudoferania polylepis at the Reptarium.cz Reptile Database. Accessed 9 October 2020.
  2. ^ Pseudoferania at the Reptarium.cz Reptile Database
  3. ^ a b c "Macleay's water snake" (PDF). Common snakes of the Northern Territory. Northern Territory Government. Archived from the original (PDF) on 2011-03-22. Retrieved 2011-05-12.
  4. ^ "Enhydris polylepis (Macleay's Water Snake) - JCU". www-public.jcu.edu.au. Archived from the original on 30 May 2012. Retrieved 6 June 2022.
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Pseudoferania: Brief Summary

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Pseudoferania is a genus of snake in the family Homalopsidae. The genus is monotypic, containing the sole species Pseudoferania polylepis (MacLeay's water snake). The snake is found in Australia and New Guinea.

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