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Helicops trivittatus (GRAY, 1849)

IUCN Red List - Helicops trivittatus - Least Concern, LC

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesE: Equatorial Keelback 
SynonymMyron trivittatus GRAY 1849: 70
Helicops trivittatus — BOULENGER 1893: 276
Helicops trivittatus — PETERS & OREJAS-MIRANDA 1970: 125
Helicops trivittatus — DA FROTA 2005
Helicops trivittatus — WALLACH et al. 2014: 323
Helicops trivittatus — NOGUEIRA et al. 2019 
DistributionN Brazil (Pará)

Type locality: see comment  
Reproductionviviparous (Braz et al. 2016) 
TypesType: BMNH 1946.1.13.99 (and possibly additional specimens). 
Diagnosis 
CommentSynonymy: Might be a synonym of Helicops infrataeniatus (see that entry). Synonymy partly after PETERS & OREJAS-MIRANDA 1970. COPE 1878 also described a Helicops trivittatus (holotype: ANSP 11306 from Argentina) fide Malnate 1971: 373).

Terra typica: “India ?” [GRAY 1849]

Habitat: aquatic 
Etymology 
References
  • Avila-Pires, Teresa C.S.; Kleiton R. Alves-Silva, Laís Barbosa, Fabrício S. Correa, Jorge F. A. Cosenza, Ana Paula V. Costa-Rodrigues, Aurea A. Cronemberger, Marinus S. Hoogmoed, Geraldo R. Lima-Filho, Adriano O. Maciel, Alexandre F. R. Missassi, Lyw 2018. Changes in Amphibian and Reptile Diversity Over Time in Parque Estadual do Utinga, a Protected Area Surrounded by Urbanization. Herpetology Notes 11: 499-512 - get paper here
  • Boulenger, G.A. 1893. Catalogue of the snakes in the British Museum (Nat. Hist.) I. London (Taylor & Francis), 448 pp. - get paper here
  • Braz, Henrique B.; Rodrigo R. Scartozzoni, Selma M. Almeida-Santos 2016. Reproductive modes of the South American water snakes: A study system for the evolution of viviparity in squamate reptiles. Zoologischer Anzeiger 263: 33-44; doi:10.1016/j.jcz.2016.04.003 - get paper here
  • Costa, Henrique C.; Diego J. Santana, Fernando Leal, Ricardo Koroiva, and Paulo C.A. Garcia 2016. A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil. Herpetologica 72 (2): 157-166
  • da Frota, J.G. 2005. Nova espécie de Helicops Wagler, 1830 (Serpentes, Colubridae) do rio Tapajós, Amazonia, Brasil. Phyllomedusa 4 (1): 61-68 - get paper here
  • Gray, J. E. 1849. Catalogue of the specimens of snakes in the collection of the British Museum. Edward Newman, London, i-xv; 1-125. - get paper here
  • Kawashita-Ribeiro, Ricardo Alexandre; Robson Waldemar Ávila, and Drausio Honorio Morais 2013. A New Snake of the Genus Helicops Wagler, 1830 (Dipsadidae, Xenodontinae) from Brazil. Herpetologica 69 (1): 80-90. - get paper here
  • MORAES-DA-SILVA, ANTONIO; RENATA CECÍLIA AMARO, PEDRO M. SALES NUNES, CHRISTINE STRÜSSMANN, MAURO JUNIOR TEIXEIRA, ALBEDI JR. ANDRADE, VINÍCIUS SUDRÉ, RENATO RECODER, MIGUEL TREFAUT RODRIGUES, FELIPE FRANCO CURCIO 2019. Chance, luck and a fortunate finding: a new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal wetlands. Zootaxa 4651 (3): 445–470 - get paper here
  • Nogueira, Cristiano C.; Antonio J.S. Argôlo, Vanesa Arzamendia, Josué A. Azevedo,<br />Fausto E. Barbo, Renato S. Bérnils, Bruna E. Bolochio, Marcio Borges-Martins,<br />Marcela Brasil-Godinho, Henrique Braz0, Marcus A. Buononato, Diego F. Cisnero 2019. Atlas of Brazilian snakes: verified point-locality maps to mitigate the Wallacean shortfall in a megadiverse snake fauna. South American J. Herp. 14 (Special Issue 1):1-274 - get paper here
  • Oliveira, Deisiele S., Aderaldo V. Silva, Rafael C. Santos, Jéssica V. M. Barriga, Ravi C. Gabriel and Carlos E. Costa-Campos. 2015. Geographic Distribution: Helicops trivittatus (striped water snake). Herpetological Review 46 (2): 219 - get paper here
  • Santos-Costa, Maria Cristina dos; Gleomar Fabiano Maschio, Ana Lúcia da Costa Prudente 2015. Natural history of snakes from Floresta Nacional de Caxiuanã, eastern Amazonia, Brazil. Herpetology Notes 8: 69-98 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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