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Hydrops triangularis (WAGLER, 1824)

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies
 
Common NamesTriangle Water Snake 
SynonymElaps triangularis WAGLER 1824: 5
Hydrops triangularis - WAGLER 1830: 170
Hydrops triangularis — BEEBE 1946: 28
Hydrops triangularis bassleri ROZE 1957
Hydrops triangularis venezuelensis ROZE 1957
Hydrops triangularis bolivianus ROZE 1957
Hydrops triangularis fasciatus ROZE 1957
Hydrops triangularis neglectus ROZE 1957
Hydrops triangularis venezuelensis ROZE 1957
Hydrops triangularis — LANCINI & KORNACKER 1989
Hydrops triangularis — KORNACKER 1999: 90
Hydrops triangularis venezuelensis — GORZULA & SEÑARIS 1999
Hydrops triangularis neglectus — BOOS 2001
Hydrops triangularis — WALLACH et al. 2014: 342 
DistributionAmazonas river regions of N Bolivia, Venezuela (Cojedes: [HR 31: 186]), Guyana, Surinam, French Guiana, Trinidad, E Peru, Ecuador, Brazil (Maranhão [HR 27: 212], Mato Grosso [HR 32: 60]), Colombia, Argentina (Corrientes)

bassleri: Peru

bolivianus: Bolivia; Type locality: Bolivia, Puerto Sucre, Río Mamore.

fasciatus: French Guyana, Suriname

neglectus: Trinidad, W Guiana, Brazil (Pará [HR 33: 324])

venezuelensis: Venezuela, Colombia.

Type locality: Ega (= Tefé) Lago Tefé, at confluence with Rio Amazon, Brazil. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproductionoviparous (Braz et al. 2016) 
TypesHolotype: ZSM 1846/0, male
Holotype: UMMZ [bolivianus] 
CommentSee distribution map for subspecies in Scrocchi et al. (2005).

Subspecies: ALBUQUERQUE & DE LEMA (2008) rejected the six subspecies recognized in this species based on the analysis of a larger sample throughout the distribution.

Diagnosis: ALBUQUERQUE & DE LEMA 2008: 57. 
References
  • Albuquerque, N.R. de 2001. Geographical distribution: Hydrops trianguligerus. Herpetological Review 32: 60 - get paper here
  • Albuquerque, N.R. de & De Lema, T. 2008. Taxonomic revision of the Neotropical water snake Hydrops triangularis (Serpentes, Colubridae). Zootaxa 1685: 55–66 - get paper here
  • Almendariz, A. 1991. Anfibios y Reptiles [del Ecuador]. Rev. Politecnica. XVI (3): 89-162.
  • Beebe, William 1946. Field notes on the snakes of Kartabo, British Guiana, and Caripito, Venezuela. Zoologica 31: 11-52
  • BERNARDE, P.S., ALBUQUERQUE, S., BARROS, T.O. & TURCI, L.C.B. 2012. Serpentes do Estado de Rondônia, Brasil. Biota Neotrop. 12(3): 1-29 - get paper here
  • Boos, H.E.A. 2001. The snakes of Trinidad and Tobago. Texas A&M University Press, 270 pp.
  • 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
  • Buongermini-P., Emilio;Waller, Tomas 1998. Geographic Distribution. Hydrops triangularis. Herpetological Review 29 (2): 113 - get paper here
  • Claessen, H. 2003. De slangen van de Guyanas Deel VI. Lacerta 61 (5): 177-187 - get paper here
  • Cole, Charles J.; Carol R. Townsend, Robert P. Reynolds, Ross D. MacCulloch, and Amy Lathrop 2013. Amphibians and reptiles of Guyana, South America: illustrated keys, annotated species accounts, and a biogeographic synopsis. Proceedings of the Biological Society of Washington 125 (4): 317-578; plates: 580-620 - get paper here
  • Frota, J.G. da; Pedroso dos Santos-Jr, Alfredo; Menezes-Chalkidis, H. de & Guimarães Guedes, A. 2005. AS SERPENTES DA REGIÃO DO BAIXO RIO AMAZONAS, OESTE DO ESTADO DO PARÁ, BRASIL (SQUAMATA). Biociências 13 (2): 211-220
  • Gasc & Rodrigues 1980. Liste preliminaire des Serpents de la Guyane francaise. Bull. Mus. Nat. Hist. Nat. Paris 2 (4): 559-598
  • Gorzula, Stefan & Senaris, J. Celsa 1999. In: Contribution to the herpetofauna of the Venezuelan Guayana. I: a data base. Scientia Guaianae, Caracas, No. 8 [1998], 269+ pp.; ISBN 980-6020-48-0
  • Lancini,A.R. & Kornacker,P.M. 1989. Die Schlangen von Venezuela. Armitano Editores C.A., Caracas, 1-381
  • Natera-Mumaw, Marco; Luis Felipe Esqueda-González & Manuel Castelaín-Fernández 2015. Atlas Serpientes de Venezuela Santiago de Chile, Dimacofi Negocios Avanzados S.A., 456 pp. - get paper here
  • Pedroza-Banda, Raúl; Jhon Jairo Ospina-Sarria, Teddy Angarita-Sierra, Marvin Anganoy-Criollo, John D. Lynch 2014. Estado de la fauna de anfibios y reptiles del Casanare Ciencias naturales Estado del conocimiento de la fauna de anfibios y reptiles del departamento de Casanare, Colombia. Rev. Acad. Colomb. Cienc. 38 (146): 17-34 - get paper here
  • Pérez-Santos,C. & Moreno, A.G. 1988. Ofidios de Colombia. Museo reegionale di Scienze Naturali, Torino, Monographie VI, 517 pp.
  • RIVAS, GILSON A.; CÉSAR R. MOLINA, GABRIEL N. UGUETO, TITO R. BARROS, CÉSAR L. BAR- RIO-AMORÓS & PHILIPPE J. R. KOK 2012. Reptiles of Venezuela: an updated and commented checklist. Zootaxa 3211: 1–64 - get paper here
  • Roze, J.A. 1957. Resumen de una revision del genero Hydrops (Wagler), 1830 (Serpentes: Colubridae). Acta Biol. Venezuel. 2 (8): 51-95
  • 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
  • Scrocchi, G.J.; Lucia Ferreira, V; Giraudo, A.R.; Ávila, R.W. & Motte, M. 2005. A new species of Hydrops (Serpentes: Colubridae: Hydropsini) from Argentina, Brazil, and Paraguay. Herpetologica 61 (4): 468-477 - get paper here
  • Spix, J.B. von. 1824. Serpentum brasiliensium species novae ou histoire naturelle des espèces nouvelles de serpens, recueillies et observées pendant le voyage dans l'intérieur du Brésil dans les années 1817, 1818, 1819, 1820, exécuté par ordre de sa majesté le Roi de Bavi Typis Franc. Seraph. Hübschmanni, Monachii viii + 75 pp.
  • Starace, Fausto 1998. Guide des Serpents et Amphisbènes de Guyane. IBIS Rouge Editions, Guadeloupe, Guyane, 450 pp.
  • Starace, Fausto 2013. Guide des Serpents et Amphisbènes de Guyane. Ibis Rouge Editions, Matoury, Guyane, ISBN 978-2-84450-407-4 - get paper here
  • Wagler, Jean G. 1830. Natürliches System der Amphibien, mit vorangehender Classification der Säugetiere und Vögel. Ein Beitrag zur vergleichenden Zoologie. 1.0. Cotta, München, Stuttgart, and Tübingen, 354 pp.
  • Wagler,J. 1824. Serpentum Brasiliensium species novae, ou histoire naturelle des espèces nouvelles de serpens. In: Jean de Spix, Animalia nova sive species novae. [NAtrix bahiensis: 27,. Monaco, Typis Franc. Seraph. Hübschmanni, vii + 75 pp.
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. Taylor and Francis, CRC Press, 1237 pp.
  • Yuki, Rubens N. 1997. Geographic Distribution. Hydrops triangularis. Herpetological Review 28 (1): 52 - get paper here
  • Zaher, Hussam; Caramaschi, Ulisses 1996. Geographic Distribution. Hydrops triangularis. Herpetological Review 27 (4): 212-213 - get paper here
 
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