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Helicops angulatus (LINNAEUS, 1758)

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Brown-banded watersnake, Mountain Keelback
Portuguese: Cobra-D’água, Jararaca-D’água, Surucucurana, Trairamboia 
SynonymColuber angulatus LINNAEUS 1758: 217
Coluber alidras LINNAEUS 1758
Coluber Surinamensis SHAW 1802: 460
Natrix aspera WAGLER 1824: 37
Helicops angulatus — WAGLER 1830: 171
Helicops angulatus — DUMÉRIL, BIBRON & DUMÉRIL 1854: 746
Helicops angulatus — GÜNTHER 1861: 428
Helicops fumigatus COPE 1868: 308
Helicops cyclops COPE 1868: 309
Uranops angulatus — SCLATER 1891: 45
Helicops angulatus — BOULENGER 1893: 278
Helicops angulata — AMARAL 1925
Helicops angulata — BEEBE 1946: 28
Helicops angulatus — HOGE 1964: 56
Helicops angulatus — PETERS & OREJAS-MIRANDA 1970: 123
Helicops angulatus — GASC & RODRIGUES 1980
Helicops angulatus — GORZULA & SEÑARIS 1999
Helicops angulatus — KAWASHITA-RIBEIRO et al. 2013
Helicops angulatus — WALLACH et al. 2014: 321
Helicops angulatus — NOGUEIRA et al. 2019
Helicops angulatus — MURPHY et al. 2020
Helicops cyclops — MURPHY et al. 2020
Helicops fumigatus — MURPHY et al. 2020 
DistributionVenezuela (Amazonas, Apure, Bolivar, Monagas, Delta Amacuro, Sucre, Portuguesa, Anzoátegui, Guárico, Cojedes), Colombia, Brazil (Pará, Rondonia, Goias, Mato Grosso, Sergipe, S Ceará, Acre, Bahia, Piauí, Paraíba, Pernambuco etc.), Bolivia (Beni), Peru, Trinidad, Ecuador, French Guiana, Guyana

Type locality: “Asia” (in error)  
Reproductionovovivparous and oviparous. Helicops angulatus is only one of a handful of snake species that are known to have both ovovivparous and oviparous reproduction (Rossman 1974, 1984, Braz et al. 2016, Murphy et al. 2020) 
TypesHolotype: NRM 17 (also given as RMS)
Holotype: NRM 18 [Coluber alidras]
Holotype: ANSP 5183 (ANSP 5131 fide Murphy et al. 2020); Brazil, Bahia [Helicops cyclops]
Holotype: ANSP 5132; Surinam; [Helicops fumigatus]
Lectotype: ZSM 1528/0, female [Natrix aspera] 
DiagnosisDiagnosis: Helicops angulatus can be distinguished from all its congeners except H. scalaris and H. apiaka by having subcaudal keels, 17–20 dorsal scale rows at midbody, and 103–123 ventrals. From H. scalaris it differs in having no intergenials (for information on references see Suppl. material 3; for summarized pholidosis information of the examined specimens see Table 1). For differentiation from H. apiaka see identification of H. apiaka (Schöneberg & Köhler 2021). 
CommentSynonymy partly after PETERS & OREJAS-MIRANDA 1970. Boulenger (1893: 279) placed both H. cyclops and H. fumigatus into the synonymy of Helicops angulatus without comment. Murphy et al. 2020 revalidated H. cyclops from the synonym of H. angulatus but did not clarify which populations within H. angulatus (with a huge range over much of Northern South America) are referrable to H. cyclops (see their map in Fig. 1). Also Murphy sequenced at least 14 specimens of H. angulatus but show only 3 in their tree (Fig. 3). Finally, while they reproduce Cope’s description of H. cyclops, they did not provide a revised diagnosis for either angulatus and/or cyclops. Finally, Murphy et al. lists both cyclops and fumigatus as valid species but states, “Coluber surinamensis Shaw, Natrix asper Wagler, and Helicops fumigatus Cope are likely conspecific with H. angulatus.” 
EtymologyUnclear, but apparently from Latin angulatus = made angular, cornered, with angles, angular. 
References
  • Acosta-Ortiz, Juan Manuel; Vincent A. Vos 2023. Anurophagy by the Brown-banded Watersnake, Helicops angulatus (Serpentes: Colubridae): A review with new records. Reptiles & Amphibians 30 (1): e18435 - get paper here
  • Amaral, A. do 1925. South American snakes in the collection of the United States National Museum. Proc. US Natl. Mus. 67 (24): 1-30 - get paper here
  • Aponte-Gutiérrez, Andrés F.; Felipe Parra-Torres, Álvaro J. Velásquez-Suarez. 2017. Helicops angulatus (Linnaeus 1758). Mapaná de agua. Catálogo de Anfibios y Reptiles de Colombia 3 (1): 62-66 - get paper here
  • Auguste, Renoir J. 2019. Herpetofaunal checklist for six pilot protected areas in Trinidad and Tobago. Herpetology Notes 12: 577-585 - get paper here
  • Ávila, R.W.; R.A. Kawashita-Ribeiro. 2011. Herpetofauna of São João da Barra Hydroelectric Plant, state of Mato Grosso, Brazil. Check List 7 (6): 750-755 - get paper here
  • 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
  • Barrio-Amorós, César L. & Brewer-Carias, Charles 2008. Herpetological results of the 2002 expedition to Sarisari–ama, a tepui in Venezuelan Guayana, with the description of five new species. Zootaxa 1942: 1-68 - get paper here
  • Beebe, William 1946. Field notes on the snakes of Kartabo, British Guiana, and Caripito, Venezuela. Zoologica 31: 11-52 - get paper here
  • BERNARDE, P.S., ALBUQUERQUE, S., BARROS, T.O. & TURCI, L.C.B. 2012. Serpentes do Estado de Rondônia, Brasil. Biota Neotropica 12 (3): 1-29 - get paper here
  • Bernarde, Paulo Sérgio;, Reginaldo Assêncio Machado & Luiz Carlos Batista Turci 2011. Herpetofauna da área do Igarapé Esperança na Reserva Extrativista Riozinho da Liberdade, Acre – Brasil. Biota Neotropica 11 (3): 117-144 - get paper here
  • Betancourth-Cundar, Mileidy & Aquiles Gutiérrez Zamora 2010. ASPECTOS ECOLÓGICOS DE LA HERPETOFAUNA DEL CENTRO EXPERIMENTAL AMAZÓNICO, PUTUMAYO, COLOMBIA ECOTRÓPICOS 23 (2): 61-78 - get paper here
  • Boos, H.E.A. 2001. The snakes of Trinidad and Tobago. Texas A&M University Press, 270 pp.
  • 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
  • Carvalho Teixeira, Cássia de; Luciano Fogaça de Assis Montag, and Maria Cristina dos Santos-Costa 2017. Diet Composition and Foraging Habitat Use by Three Species of Water Snakes, Helicops Wagler, 1830, (Serpentes: Dipsadidae) in Eastern Brazilian Amazonia. Journal of Herpetology 51 (2): 215-222. - get paper here
  • CATENAZZI, A., LEHR, E. & VON MAY, R. 2013. The amphibians and reptiles of Manu National Park and its buffer zone, Amazon basin and eastern slopes of the Andes, Peru. Biota Neotropica 13 (4): 269-283
  • Cisneros-Heredia, D.F. 2006. Reptilia, Colubridae, Helicops angulatus and Helicops leopardinus: Distribution extension, new country record. Check List 2 (1): 36-37 - 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
  • Cope, E.D. 1868. Sixth contribution to the herpetology of Tropical America. Proc. Acad. Nat. Sci. Philadelphia 20: 305-313 - 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 - get paper here
  • Costa-Campos, Carlos Eduardo; Pedro Hugo Esteves Silva, Luã Euriqui Santos Guerra, Jackson Cleiton Sousa 2017. Predation on the brilliant-thighed poison frog Allobates femoralis (Aromobatidae) by the Amazonian water snake Helicops angulatus (Dipsadidae). Herpetology Notes 10: 665-667 - get paper here
  • 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
  • De Albuquerque, Ralph Lacerda, Daniel Orsi Laranjeiras, Arielson Dos Santos Protazio, Diego Jose Santana, Ricardo Rodrigues, Daniel Oliveira Mesquita and Frederico Gustavo Rodrigues Franca. 2013. Helicops angulatus (watersnake) diet. Herpetological Review 44 (3): 522-523 - get paper here
  • Dubeux, M. J. M., Araújo Neto, J. V. D., Triburcio, I. C. S., Lisboa, B. S., Torquato, S., Freitas, M. A. D., ... & Mott, T. 2022. A “hotspot” within a hotspot: the reptiles of the Estação Ecológica and Área de Proteção Ambiental de Murici, Atlantic Forest of northeastern Brazil. Biota Neotropica, 22: 1-14 - get paper here
  • Duellman, W. E. 1978. The biology of an equatorial herpetofauna in Amazonian Ecuador. Misc. Publ. Univ. Kans. Mus. Nat. Hist. 65: 1-352 - get paper here
  • Duellman, W. E. 2005. Cusco Amazónico: The Lives of Amphibians and Reptiles in an Amazonian Rainforest. Comstock Pub Assoc.
  • Duellman, W.E., & Salas, A.W. 1991. Annotated checklist of the amphibians and reptiles of Cuzco Amazonico, Peru. Occas. Papers Mus. of Natur. Hist., Univ. of Kansas, Lawrence (143): 13 pp. - get paper here
  • Eversole, C. B., Powell, R. L., Rivas, L. R., & Lizarro, D. E. 2024. Reptile Biodiversity and Vulnerability in Bolivia’s Beni Department: Informing Conservation Priorities in a Neglected Frontier. Diversity, 16(6), 335 - get paper here
  • Ferrão, M., Soares-Filho, J.A.R. & Oliveira, M. 2012. Checklist of reptiles (Testudines, Squamata) from Alto Alegre dos Parecis, southwestern Amazonia, Brazil. Herpetology Notes, 5: 473-480 - get paper here
  • Fonseca, Wirven Lima da; Julivaldo Dantas da Silva, Arthur Diesel Abegg, Conrado Mario da Rosa, Paulo Sergio Bernarde 2019. Herpetofauna of Porto Walter and surrounding areas, Southwest Amazonia, Brazil. Herpetology Notes 12: 91-107 - get paper here
  • Fraga R de, Stow AJ, Magnusson WE, Lima AP 2014. The Costs of Evaluating Species Densities and Composition of Snakes to Assess Development Impacts in Amazonia. PLoS One 9 (8): e105453. doi:10.1371/journal.pone.0105453 - get paper here
  • Fraga, R., Lima, A. P., Prudente, A. L. C., & Magnusson, W. E. 2013. Guia de cobras da região de Manaus – Amazônia Central. Manaus: INPA - get paper here
  • França RC, Solé M and França FGR 2024. Conservation status of Brazilian snakes inhabiting the Atlantic Forest of Northeastern Brazil. Front. Ecol. Evol. 12:1301717 - get paper here
  • Franca, F.G.R.; Daniel O. Mesquita, Cristiano C. Nogueira, and Alexandre F. B. Araújo 2008. Phylogeny and Ecology Determine Morphological Structure in a Snake Assemblage in the Central Brazilian Cerrado. Copeia 2008 (1): 23-38 - get paper here
  • Franca, F.G.R.; Mesquita, Daniel Oliveira and Guarino Rinaldi Colli 2006. A CHECKLIST OF SNAKES FROM AMAZONIAN SAVANNAS IN BRAZIL, HOUSED IN THE COLEÇÃO HERPETOLÓGICA DA UNIVERSIDADE DE BRASÍLIA, WITH NEW DISTRIBUTION RECORDS. Occ. Pap. Oklahoma Mus. Nat. Hist., Univ. Oklahoma 17: 1-13
  • França, R C; Sampaio, I L R & França, F G R 2018. Helicops angulatus (Brown-banded Watersnake) Plastic ingestion. Herpetological Review 49 (2): 342-343 - get paper here
  • Freitas, M. A. de, Venancio, N. M., Abegg, A. D., Azevedo, W. S, Pereira, V. O., Zanotti, A. P., Veloso, A., Schwarzbach, L., Oliveira, A. G., da Silva, R. C. C., de Amorim, V. R. G. and de Moura, G. J. B. 2020. Herpetofauna at the Rio Acre Ecological Station, Amazon Rainforest, Brazil. Herpetology Notes 13: 33-48. - get paper here
  • Freitas, Marco Antonio de 2014. Squamate reptiles of the Atlantic Forest of northern Bahia, Brazil. Check List 10 (5): 1020-1030 - 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 - get paper here
  • FUJISHIMA, KANTA 2021. Behavioural response of the brown-banded water snake Helicops angulatus to simulated predation. The Herpetological Bulletin (155) - get paper here
  • Gasc & Rodrigues 1980. Liste preliminaire des Serpents de la Guyane francaise. Bull. Mus. Nat. Hist. Nat. Paris 2 (4): 559-598
  • Gonzalez R. C. et al. 2020. Lista dos Nomes Populares dos Répteis no Brasil – Primeira Versão. Herpetologia Brasileira 9 (2): 121 – 214 - get paper here
  • 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
  • GUEDES, THAÍS B.; CRISTIANO NOGUEIRA & OTAVIO A. V. MARQUES 2014. Diversity, natural history, and geographic distribution of snakes in the Caatinga, Northeastern Brazil. Zootaxa 3863 (1): 001–093 - get paper here
  • Günther, A. 1861. On the ophidian genus Helicops. Ann. Mag. Nat. Hist. (3) 7: 425-428 - get paper here
  • Hedges SB, Powell R, Henderson RW, Hanson S, and Murphy JC 2019. Definition of the Caribbean Islands biogeographic region, with checklist and recommendations for standardized common names of amphibians and reptiles. Caribbean Herpetology 67: 1–53
  • Hoge, Alphonse Richard 1964. Serpentes da Fundação "Surinaams Museum". Mem. Inst. Butantan 30 [1960-1962]: 51-64 - get paper here
  • Hoogmoed,M.S. and Gruber,U. 1983. Spix and Wagler type specimens of reptiles and amphibians in the Natural History Musea in Munich (Germany) and Leiden (The Netherlands). Spixiana Suppl. 9: 319-415 - get paper here
  • INFANTE-RIVERO E., M. NATERA-MUMAW A. MARCANO 2008. Extension of the distribution of Eunectes murinus (Linnaeus, 1758) and Helicops angulatus (Linnaeus, 1758) in Venezuela, with notes on ophiophagia. Herpetotropicos 4 (1): 39 - get paper here
  • JORGE, R. F., & PEÑA, A. P. 2022. REPTILES FROM AN URBAN PARK IN THE CERRADO OF CENTRAL BRAZIL. Herpetological Conservation and Biology, 17(2), 413-422 - get paper here
  • Kawashita-Ribeiro, Ricardo Alexandre; Jacqueline Pimentel Silva, Anelise Figueiredo da Silva, Luana Aparecida Gomes de Arruda, Tamí Mott, Marcos André de Carvalho 2011. Descobrindo a Amazônia Meridional: Biodiversidade da Fazenda São Nicolau Os Répteis Escamosos (Reptilia, Squamata)da Fazenda São Nicolau, Cotriguaçu,Mato Grosso, Brasil, um Estudo Preliminar. In: Descobrindo a Amazônia Meridional: biodiversidade da F Paue Prosa Comunicação Ltda. - 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
  • Klaczko, J; Sherratt E, Setz EZF 2016. Are Diet Preferences Associated to Skulls Shape Diversification in Xenodontine Snakes? PLoS One 11 (2): e0148375. doi:10.1371/journal.pone.0148375 - get paper here
  • Koski, D. A., A. T. Monico and A. P. V. Koski 2016. Helicops angulatus (Brown-banded Watersnake) predation. Herpetological Review 47(3): 478-479. - get paper here
  • Lancini,A.R. & Kornacker,P.M. 1989. Die Schlangen von Venezuela. Armitano Editores C.A., Caracas, 1-381
  • Leão, S. M. & Brandão, R. A. 2012. Helicops angulatus (watersnake) predation. Herpetological Review 43: 493 - get paper here
  • Lehr, E. 2002. Amphibien und Reptilien in Peru. Natur und Tier-Verlag (Münster), 208 pp. - get paper here
  • Lima Moraes, L. J. C. de, do Nascimento Rainha, R., de Pinho Werneck, F., de Souza Oliveira, A. F., Gascon, C., & de Carvalho, V. T. 2022. Amphibians and reptiles from a protected area in western Brazilian Amazonia (Reserva Extrativista do Baixo Juruá). Papéis Avulsos de Zoologia, 62, e202262054-e202262054 - get paper here
  • Linnaeus, C. [= Linné, C. von] 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata. Laurentii Salvii, Holmiæ. 10th Edition: 824 pp. - get paper here
  • Madella-Auricchio, Cláudia Renata; Paulo Auricchio Enio Saraiva Soares 2017. Reptile species composition in the Middle Gurguéia and comparison with inventories in the eastern Parnaíba River Basin, State of Piauí, Brazil. Papéis Avulsos de Zoologia 57(28): 375-386, - get paper here
  • Markezich, A.L. 2002. New distribution records of reptiles from Western Venezuela. Herpetological Review 33 (1): 69-74 - get paper here
  • Marques R, Mebert K, Fonseca É, Rödder D, Solé M, Tinôco MS 2016. Composition and natural history notes of the coastal snake assemblage from Northern Bahia, Brazil. ZooKeys 611: 93-142. doi: 10.3897/zookeys.611.9529 - get paper here
  • Marques, R., D. Rödder, M. Solé & M. S. Tinôco 2017. Diversity and habitat use of snakes from the coastal Atlantic rainforest in northeastern Bahia, Brazil. Salamandra 53 (1): 34-43 - get paper here
  • Medina-Rangel, Guido Fabian; Miguel Á. Méndez-Galeano &<br>Martha Lucía Calderón-Espinosa 2019. Herpetofauna of San José del Guaviare, Guaviare, Colombia Biota Colombiana 20 (1): 75-90 - get paper here
  • Mendes-Júnior, Raimundo Nonato Gomes, Huann Carllo Gentil Vasconcelos, Thays Sanches Goncalves and Rafael de Fraga. 2013. Helicops angulatus (brown-banded watersnake) diet. Herpetological Review 44 (2): 330 - get paper here
  • Mendes-Pinto, T. J. & S. Marques de Souza 2011. Preliminary assessment of amphibians and reptiles from Floresta Nacional do Trairão, with a new snake record for the Pará state, Brazilian Amazon. Salamandra 47 (4): 199-206 - get paper here
  • MENDES-PINTO, TELÊMACO JASON; Mestrando, BERNHARD, RAFAEL, VOGT, RICHARD; PEDRETT, RONNEZZA CÉLLIA LOBATO CAMPOS;GARCIA, RAUBER SANTOS 2011. A COLLECTION OF AMPHIBIANS AND REPTILES OF THE NATIONAL INSTITUTE OF RESEARCH OF THE AMAZON. Rev. Colombiana cienc. Anim. 3(2): 238 - get paper here
  • Mesquita, Daniel Oliveira; Brygida Alves, Carmem Pedro, Daniel Laranjeiras, Francis Caldas, Isabella Pedrosa, Jefter Rodrigues, Leandro Drummond, Lucas Cavalcanti, Milena Wachlevski, Paulo Nogueira-Costa, Rafaela França, Frederico França 2018. Herpetofauna in two habitat types (tabuleiros and Stational Semidecidual Forest) in the Reserva Biológica Guaribas, northeastern Brazil. Herpetology Notes 11: 455-474 - get paper here
  • Metcalf, M. F., Guedouar, E., Davis, L., Rodriguez, A., Marsh, A., Pacaya, E. T., ... & Gunnels IV, C. W. 2023. Herpetofauna of Madre Selva Biological Station in Loreto, Peru. Herpetology Notes, 16, 727-740
  • Metcalf, Matthew; Alexander Marsh, Emerson Torres, Devon Graham, Charles Gunnels 2020. Herpetofauna of the Santa Cruz Forest Preserve in the Peruvian Amazon Basin. Herpetology Notes 13: 753-767 - get paper here
  • Miranda JP, Costa JCL, Rocha CFD 2012. Reptiles from Lençóis Maranhenses National Park, Maranhão, northeastern Brazil. ZooKeys 246: 51–68 - get paper here
  • Miranda, Daniele Bazzo; Nathocley Mendes Venâncio, Saymon de Albuquerque 2014. Rapid survey of the herpetofauna in an area of forest management in eastern Acre, Brazil. Check List 10 (4): 893-899 - 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
  • Morato, S.A.A.; A.M.X. Lima; D.C.P. Staut; R.G. Faria; J.P. Souza-Alves; S.F. Gouveia; M.R.C. Scupino; R. Gomes; M.J. Silva. 2011. Amphibians and Reptiles of the Refúgio de Vida Silvestre Mata do Junco, municipality of Capela, state of Sergipe, northeastern Brazil. Check List 7 (6): 756-762 - get paper here
  • Morato, S.A.A.; Calixto, P.O.; Mendes, L.R.; Gomes, R.; Galatti, U.; Trein, F.L.; Oliveira, F.S.; Ferreira, G.N. 2014. Guia fotográfico de identificação da herpetofauna da Floresta Nacional de Saracá-Taquera, Estado do Pará. Curitiba: STCP Engenharia de Projetos Ltda.; Porto Trombetas: MRN – Mineração Rio do Norte S.A.; 213 p. - get paper here
  • Morato, Sérgio Augusto Abrahão; Guilherme Nunes Ferreira; Michela Rossane Cavilha Scupino (eds.) 2018. Herpetofauna da Amazônia Central: Estudos na FLONA de Saracá-Taquera. Curitiba, Pr: STCP Engenharia de Projetos Ltda.; Porto Trombetas, Pa: MRN – Mineração Rio do Norte S.A., 2018.<br>210p. - get paper here
  • Moravec J., Aparicio J. 2004. Notes on the herpetofauna of Nacebe (Provincia Abuna, Departamento Pando, Bolivia). Journal of the National Museum (Prague), Natural History Series 173 (1-4): 13-28
  • Moura, M.R., Costa, H.C., Abegg, A.D., Alaminos, E., Angarita-Sierra, T., Azevedo, W.S., Cabral, H., Carvalho, P., Cechin, S., Citeli, N., Dourado, A.C.M., Duarte, A.F.V., França, F.G.R., Freire, E.M.X., Garcia, P.C.A., Mol, R., Montero, R., Moraes-d 2022. Unwrapping broken tails: Biological and environmental correlates of predation pressure in limbless reptiles. Journal of Animal Ecology. 92(2):324–337 - get paper here
  • Muñoz-Saba, Yaneth; Nathaly Calvo-Roa, Paul Andrés Gómez-Sandoval, Diego Casallas-Pabón John Douglas Lynch, Lucas S. Barrientos, Diego A. Gómez-Sánchez. 2019. Guía de campo de los mamíferos, anfibios y reptiles de Santa María (Boyacá, Colombia). Serie Guías de Campo del Instituto de Ciencias Naturales. N° 23. Bogotá D.C. Universidad Nacional de Colombia. Bogotá. 317 p - get paper here
  • Murphy JC, Muñoz-Mérida A, Auguste RJ, Lasso-Alcalá O, Rivas GA, Jowers MJ. 2020. Evidence for cryptic diversity in the Neotropical water snake, Helicops angulatus (Linnaeus, 1758) (Dipsadidae, Hydropsini), with comments on its ecology, facultative reproductive mode, and conservation. Amphibian & Reptile Conservation 14(3) [Taxonomy Section]: 138–155 (e261) - get paper here
  • Murphy, John C.; John C. Weber, Michael J. Jowers, and Robert C. Jadin 2023. Two Islands, Two Origins: The Snakes of Trinidad and Tobago. In: Lillywhite & Martins, eds., Islands and snakes, vol. II. Oxford University Press, p. 81 ff - get paper here
  • 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
  • Nogueira, Cristiano C.; Antonio J.S. Argôlo, Vanesa Arzamendia, Josué A. Azevedo, Fausto E. Barbo, Renato S. Bérnils, Bruna E. Bolochio, Marcio Borges-Martins, Marcela Brasil-Godinho, Henrique Braz, Marcus A. Buononato, Diego F. Cisneros-Heredia, 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 LIMA, JEFFERSON; HUGO ANDRADE, TAINARA LIMA DA SILVA & EDUARDO JOSÉ DOS REIS DIAS. 2022. Reptiles of Sergipe: current knowledge and sampling discontinuities. Herpetology Notes 15: 69–78. - get paper here
  • OLIVEIRA, P.M.A., MELLO, A.V.A., DUBEUX, M.J.M., OLIVEIRA, S.B.A., LOURENÇO, G.F., NUNES, P.M.S. 2021. Herpetofauna of Matas de Água Azul, an Atlantic Forest remnant in Serra do Mascarenhas, Pernambuco state, Brazil. Biota Neotropica 21 (2): e20201063 - get paper here
  • O’Shea, M. 2018. The Book of Snakes. Ivy Press / Quarto Publishing, London, - 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.
  • Peters , J. A. 1960. The snakes of Ecuador; check list and key. Bull. Mus. Comp. Zool. Harvard 122: 489-541 - get paper here
  • Quelch, J.J. 1899. The poisonous snakes of British Guiana. Ann. Mag. Nat. Hist. (7) 3: 402-409 - get paper here
  • Rabosky, Daniel L.; Rudolf von May, Michael C. Grundler and Alison R. Davis Rabosky 2019. The Western Amazonian Richness Gradient for Squamate Reptiles: Are There Really Fewer Snakes and Lizards in Southwestern Amazonian Lowlands? Diversity 11: 199; doi:10.3390/d11100199 - get paper here
  • Ribeiro, S. C., I. J. Roberto, D. L. Sales, R. W. Ávila & W. O. Almeida 2012. Amphibians and reptiles from the Araripe bioregion, northeastern Brazil. Salamandra 48 (3): 133-146 - get paper here
  • Rincon-Aranguri, Monica; Nicolás Urbina-Cardona, Sandra P. Galeano, Brian C. Bock, and Vivian P. Páez 2019. Road Kill of Snakes on a Highway in an Orinoco Ecosystem: Landscape Factors and Species Traits Related to Their Mortality. Tropical Conservation Science 12: 1–18; DOI: 10.1177/1940082919830832 - get paper here
  • Rincón-Aranguri, M., Toro-Cardona, F. A., Galeano, S. P., Roa-Fuentes, L.. & Urbina-Cardona, N. 2023. Functional diversity of snakes is explained by the landscape composition at multiple areas of influence. Ecology and Evolution, 13, e10352 - get paper here
  • Rivas Fuenmayor, Gilson and Cesar Luis Barrio Amorós 2005. New Amphibian and Reptile records from Cojedes State, Venezuela. Herpetological Review 36 (2):205-209. - get paper here
  • 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
  • Rivas, L. R., Eversole, C. B., & Powell, R. L. 2023. Urban herpetofauna of Trinidad, Beni Department, Bolivia. Herpetology Notes, 16, 399-410
  • Roberto, I. J.; S. C. Ribeiro; M. M. S. Delfino; W. O. Almeida 2009. Reptilia, Colubridae, Helicops angulatus: distribution extension and rediscovery in the state of Ceara. Check List 5 (1):118-121 - get paper here
  • Rodrigues-França, Frederico Gustavo & Nathocley Mendes-Venâncio 2010. Reptiles and amphibians of a poorly known region in southwest Amazonia Biotemas, 23 (3): 71-84 - get paper here
  • Rossman 1984. Helicops angulatus (South Americanwater snake). Reproduction. Herpetological Review 15: 50. - get paper here
  • ROSSMAN. 1974. Miscellaneous notes on the South American water snake genus Helicops. HISS News-Journal 1:189-191 [1973]
  • Sampaio ILR, Santos CP, França RC, Pedrosa IMMC, Solé M, França FGR 2018. Ecological diversity of a snake assemblage from the Atlantic Forest at the south coast of Paraíba, northeast Brazil. ZooKeys 787: 107-125 - get paper here
  • Santos, D.L.; S.P. Andrade; E.P. Victor-Jr.; W. Vaz-Silva 2014. Amphibians and reptiles from southeastern Goiás, Central Brazil. Check List 10 (1): 131-148 - 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
  • Schöneberg Y, Köhler G 2022. Distribution and identification of the species in the genus Helicops Wagler, 1830 (Serpentes, Colubridae, Xenodontinae). Biodiversity Data Journal 10: e69234 - get paper here
  • Schöneberg, Y., & Köhler, G. 2021. Distribution and identification of the species in the genus Helicops Wagler, 1830 (Serpentes, Colubridae, Xenodontinae). ARPHA Preprints, 1, e67869 - get paper here
  • Sclater, W. L. 1891. List of snakes in the Indian Museum. Trustees of the Indian Museum, Calcutta, 79 pp. - get paper here
  • Shaw, G. 1802. General Zoology, or Systematic Natural History. Vol.3, part 2. G. Kearsley, Thomas Davison, London: 313-615 - get paper here
  • Silva, F.M.; A.C. Menks; A.L.C. Prudente; J.C.L. Costa; A.E.M. Travassos; U. Galatti. 2011. Squamate Reptiles from municipality of Barcarena and surroundings, state of Pará, north of Brazil. Check List 7 (3): 220-226 - get paper here
  • Silva, Marcélia Basto da; Wáldima Alves da Rocha, Janete Diane Nogueira-Paranhos 2016. Checklist of reptiles of the Amazonia-Caatinga-Cerrado ecotonal zone in eastern Maranhão, Brazil. Herpetology Notes 9: 7-14 - get paper here
  • 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
  • Strüssmann, C., E. S. de Brito & O. A. V. Marques 2013. What do water snakes eat? First report of predation by a Neotropical Hydropsini snake on giant earthworms (Glossoscolecidae). Salamandra 49 (1): 48-50 - get paper here
  • Tavares-Pinheiro, R; Pedroso-Santos, F; Sanches, P R; Figueiredo, V A M B & Costa-Campos, C E 2019. Helicops angulatus (Amazonian Water Snake) Diet. Herpetological Review 50 (1): 157 - get paper here
  • Thompson, J.C. 1913. Contributions to the Anatomy of the Ophidia. Proc. Zool. Soc. London 1913: 414-426 - get paper here
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - get paper here
  • Vaz-Silva, W. et al. 2007. Herpetofauna, Espora Hydroelectric Power Plant, state of Goiás, Brazil. Check List 3 (4): 338-345 - get paper here
  • Vaz-Silva, W.; RM Oliveira, AFN Gonzaga, KC Pinto, FC Poli, TM Bilce, M Penhacek, L Wronski, JX Martins, TG Junqueira, LCC, Cesca VY, Guimarães RD. Pinheiro 2015. Contributions to the knowledge of amphibians and reptiles from Volta Grande do Xingu, northern Brazil Braz. J. Biol., 75 (3) (suppl.): S205-S218 - get paper here
  • Vitt, L. J.; Caldwell, J. P.; Colli, G. R.; Garda, A. A.; Mesquita, D. O.; França, F. G. R. e Balbino, S. F. 2002. Um guia fotográfico dos répteis e anfíbios da região do Jalapão no Cerrado brasileiro. Norman, Oklahoma: Special Publications in Herpetology. San Noble Oklahoma Museum of Natural History
  • 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. - 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. [1830-1832] - 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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