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Pseudalsophis darwini ZAHER, YÁNEZ-MUÑOZ, RODRIGUES, GRABOSKI, MACHADO, ALTAMIRANO-BENAVIDES, BONATTO & GRAZZIOTIN, 2018

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common Names 
SynonymPseudalsophis darwini ZAHER, YÁNEZ-MUÑOZ, RODRIGUES, GRABOSKI, MACHADO, ALTAMIRANO-BENAVIDES, BONATTO & GRAZZIOTIN 2018 
DistributionGalapagos Archipelago, Ecuador (Isabela = Albemarle, Fernandina = Narborough, Tortuga = Brattle Islands)

Type locality: Tortuga Island  
Reproduction 
TypesHolotype: DHMECN 12703 (field number 1049), an adult male, collected on 12 June 2008 (Fig. 8).
PARATYPES: DHMECN 12704 (Field number 1078), a male from Isabela Island, collected at Puerto Villamil on 21 June 2008; MZUSP 22564 (Field number 1064), a female from Isabela Island, collected at Piedra Blanca (00° 07’ 27’’ N, 91° 23’ 45’’ W) on 16 June 2008; MZUSP 22563 (Field number 1048), a female from Tortuga Island (no GPS point registered), collected on 12 June 2008. 
DiagnosisDIAGNOSIS: A small insular species of Pseudalsophis that differs from all other species of the genus by the following unique combination of characters: ventral counts in females 171–179 and males 175–181; subcaudal counts in females 82–94 and males 95–100; edge of the capitulum on its asulcate side squared instead of rounded; capitular groove forming a sharp constriction on the organ. Further differs from P. hephaestus sp. nov. by its dorsum colour pattern of transversal bands that are disposed in an inverted ‘Y-shape’ condition. 
Comment 
EtymologyThe specific name, a noun in the geni- tive case, honours Charles Darwin for his invaluable contribution to our knowledge of the Galapagos Archipelago and to Science. 
References
  • Zaher, Hussam; Mario H. Yánez-Muñoz, Miguel T. Rodrigues, Roberta Graboski, Fabio A. Machado, Marco Altamirano-Benavides, Sandro L. Bonatto & Felipe G. Grazziotin 2018. Origin and hidden diversity within the poorly known Galápagos snake radiation (Serpentes: Dipsadidae), Systematics and Biodiversity, DOI: 10.1080/14772000.2018.1478910 - get paper here
 
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