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Natrix astreptophora (SEOANE, 1885)

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesE: Red-eyed grass snake
G: Rotaugen-Ringelnatter 
SynonymTropidonotus natrix var. astreptophorus SEOANE 1885: 15
Natrix natrix astreptophora — MALKMUS 1990
Natrix natrix astreptophora — SCHLÜTER 2009
Natrix natrix astreptophora — FRITZ et al. 2012
Natrix astreptophora — POKRANT et al. 2016
Natrix astreptophora — KINDLER et al. 2017
Natrix astreptophora — ESCORIZA 2018 
DistributionPortugal, Spain, S France  
Reproductionoviparous. N. tessellata hybridizes with N. natrix and N. maura (Mebert 2011, Trapp 2017). 
Types 
Diagnosis 
CommentSubspecies: see also N. natrix.

Hybridization: In the French Pyrenees region, N. n. astreptophora and N. n. helvetica hybridize occasionally. N. n. astreptophora differs consistently from all other grass snakes by its reddish iris coloration and in having significantly fewer ventral scales and another skull morphology (FRITZ et al. 2012). 
Etymology 
References
  • Escoriza D 2018. Patterns of occurrence of semi-aquatic reptiles in highly invaded Mediterranean rivers. NeoBiota 38: 23-35 - get paper here
  • Fritz, U., Corti, C., & Päckert, M. 2012. Mitochondrial DNA sequences suggest unexpected phylogenetic position of Corso-Sardinian grass snakes (Natrix cetti) and do not support their species status, with notes on phylogeography and subspecies delineation of grass snakes. Organisms Diversity and Evolution, 12(1), 71–80 - get paper here
  • Kindler, Carolin; Maxime Chèvre, Sylvain Ursenbacher, Wolfgang Böhme, Axel Hille, Daniel Jablonski, Melita Vamberger & Uwe Fritz 2017. Hybridization patterns in two contact zones of grass snakes reveal a new Central European snake species Scientific REports 7: 7378;DOI:10.1038/s41598-017-07847-9 - get paper here
  • Lopez-Seoane,Victor 1885. Identidad de Lacerta schreiberi (Bedriaga) y Lacerta viridis var. Gadovii (BOULENGER), é investigaciones herpetologicas de Galicia. La Coruña [1884]: 19 pp. - get paper here
  • Malkmus, Rudolf 1990. Reptilien und Amphibien aus der Serra de Montemuro/Portugal. Herpetofauna 12 (68): 15-20 - get paper here
  • Pokrant, Felix; Carolin Kindler, Martin Ivanov, Marc Cheylan, Philippe Geniez, Wolfgang Böhme and Uwe Fritz 2016. Integrative taxonomy provides evidence for the species status of the Ibero-Maghrebian grass snake Natrix astreptophora. Biological Journal of the Linnean Society, DOI: 10.1111/bij.12782 - get paper here
  • Schlüter, U. 2009. Die Schlangenfauna Europas. Draco 10 (39): 4-21 - get paper here
 
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