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Helicops modestus GÜNTHER, 1861

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Common NamesOlive Keelback 
SynonymHelicops modestus GÜNTHER 1861: 425
Tachyplotus hedemanni REINHARDT 1866
Helicops assimilis REINHARDT 1866: 156
Helicops modestus — BOULENGER 1893: 277
Helicops modestus — CAMPOS NOGUEIRA 2001
Helicops modestus — KAWASHITA-RIBEIRO et al. 2013
Helicops modestus — WALLACH et al. 2014: 322 
DistributionBrazil (Minas Gerais, Distrito Federal, Goias, Bahia)

Type locality: Tropical America ? [Helicops modestus GÜNTHER 1861]
Type locality: Minas Gerais, Brazil [Helicops assimilis REINHARDT 1866]  
Reproductionviviparous (Braz et al. 2016) 
TypesType: BMNH 1946.1.14.42 (and possibly additional specimens). 

Types of H. assimilis and T. hedemanni in ZMUC. 
  • 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
  • Campos Nogueira, C. de 2001. New records of Squamate Reptiles in Central Brazilian Cerrado II: Brasília Region. Herpetological Review 32 (4): 285-287 - 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 Jun 2016, Vol. 72, No. 2: 157-166
  • 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
  • Freitas, Marco António de and Thaís Figueiredo Santos Silva. 2011. Geographic Distribution: Helicops modestus. Herpetological Review 42 (3): 394 - get paper here
  • Graca Salomão, M. da et al. 2003. Colubrid snakebite: a public health problem in Brazil. Herpetological Review 34 (4): 307-312 - get paper here
  • Günther, A. 1861. On the ophidian genus Helicops. Ann. Mag. Nat. Hist. (3) 7: 425-428 - get paper here
  • Hamdan, B. & R. M. Lira-da-Silva 2012. The snakes of Bahia State, northeastern Brazil: species richness, composition and biogeographical notes. Salamandra 48 (1): 31-50 - 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
  • Oliveira, Leonardo de; Rodrigo Roveri Scartozzoni, Selma Maria de Almeida-Santos, Carlos Jared, Marta Maria Antoniazzi, Maria da Graça Salomão 2016. Morphology of Duvernoy's Glands and Maxillary Teeth and a Possible Function of the Duvernoy's Gland Secretion in Helicops modestus Günther, 1861 (Serpentes: Xenodontinae). South American J. Herp. 11 (1): 54-65. - get paper here
  • Reinhardt, JOHANNES 1866. To nye Homalopsider. Aftryk. af naturh. Forenings Vidensk. Meddeleser; Naturhist. Foren. Kjöbenhavn (10-11): 151-161 - get paper here
  • Sazima, I.;Martins, M. 1990. Presas grandes e serpentes joves: quando os olhos sao maiores que a boca. Memórias do Instituto Butantan 52: 73-79 - 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
  • 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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