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Erythrolamprus atraventer (DIXON & THOMAS, 1985)

IUCN Red List - Erythrolamprus atraventer - Least Concern, LC
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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Dixon's Ground Snake 
SynonymLiophis atraventer DIXON & THOMAS 1985: 260
Liophis atriventer [sic] — DIXON 1987
Liophis atraventer — FERNANDES et al. 2003
Liophis atraventer — CONDEZ et al. 2009
Erythrolamprus atraventer — FORLANI et al. 2010
Erythrolamprus atraventer — GRAZZIOTIN et al. 2012
Liophis atraventer — WALLACH et al. 2014: 380
Erythrolamprus atraventer — NOGUEIRA et al. 2019
Leimadophis atraventer — WALLACH 2025 
DistributionBrazil (Sao Paulo, Rio de Janeiro [HR 32: 60])

Type locality: Boracéia, São Paulo, Brazil (28° 38’ S, 45° 50’ W), elevation 900 m.  
Reproductionoviparous 
TypesHolotype: MZUSP 5066, adult male
Paratypes. MZUSP 4480, 6426, female topotypes, collector and date unknown for 4480; 6426 collected by W. R. Heyer, 21 January 1977. 
DiagnosisDiagnosis: The new species differs from all other species of Liophis by having the combination of 19-19-17 scale rows, uniform olive brown dorsum, and a black venter. (Dixon & Thomas 1985)


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Comment 
EtymologyNamed after its color, Latin “ater, atra, atrum” = dark or black, and Latin “venter” = belly or stomach. 
References
  • CONDEZ, T. H; SAWAYA, R. J. & DIXO, M. 2009. Herpetofauna dos remanescentes de Mata Atlântica da região de Tapiraí e Piedade, SP, sudeste do Brasil. Biota Neotropica 9: 1-29
  • Dixon J R; Thomas R A 1985. A new species of South American water snake (genus Liophis) from southeastern Brazil. Herpetologica 41 (3) : 259-262 - get paper here
  • Dixon, James R. 1989. A key and checklist to the neotropical snake genus Liophis with country lists and maps. Smithsonian Herp. Inf. Serv. (79): 1-40 - get paper here
  • Dixon,J.R. 1987. Taxonomy and geographic variation of Liophis typhlus and related "green" species of South America (Serpentes: Colubridae). Annals of the Carnegie Museum 52 (6): 113-138
  • Fernandes, D.S.; Passos, P.; Franco, F.L. & Germano, V.J. 2003. Liophis atraventer Dixon and Thomas 1985 (Serpentes: Colubridae) new localities, pholidosis variation, and notes on natural history. Herpetological Review 34 (4): 317-320 - get paper here
  • FORLANI, M.C., BERNARDO, P.H., HADDAD, C.B.F. & ZAHER, H. 2010. Herpetofauna of the Carlos Botelho State Park, São Paulo State, Brazil. Biota Neotropica 10 (3): 265-309 - get paper here
  • Grazziotin, Felipe G.; Hussam Zaher, Robert W. Murphy, Gustavo Scrocchi, Marco A. Benavides, Ya-Ping Zhang and Sandro L. Bonatto 2012. Molecular phylogeny of the New World Dipsadidae (Serpentes: Colubroidea): a reappraisal. Cladistics DOI: 10.1111/j.1096-0031.2012.00393.x - get paper here
  • Guedes, Thaís B.; Ricardo J. Sawaya, Alexander Zizka, Shawn Laffan, Søren Faurby, R. Alexander Pyron, Renato S. Bérnils, Martin Jansen, Paulo Passos, Ana L. C. Prudente, Diego F. Cisneros-Heredia, Henrique B. Braz, Cristiano de C. Nogueira, Alexandre 2017. Patterns, biases and prospects in the distribution and diversity of Neotropical snakes. Global Ecol Biogeogr 00:1–8 - get paper here
  • Luna, I. V. de, Ugalde, M. R., Guimarães, M. R. S., Hoffmann, K., Citeli, N., Kiefer, M. C., & Hamdan, B. 2025. A Key to Identify the Snakes of Rio de Janeiro State, Brazil, along with Notes on Geographical Records. Zoological Studies, 64(20) - get paper here
  • Marques-Tozetti, Alexandro; Sergio Augusto Abrahão Morato, Renato Silveira Bérnils, Daniel Loebmann, Luís Felipe Toledo, Russell Gray, Omar M. Entiauspe-Neto 2021. Evolutionary dynamics shape two passive defensive mechanisms in Neotropical snake radiations. Phyllomedusa 20(1): 3-13 - 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, Jane C.F.; Rodrigo Castellari Gonzalez; Paulo Passos; Davor Vrcibradic & Carlos Frederico Duarte Rocha 2020. Non-Avian Reptiles of the state of Rio de Janeiro, Brazil: status of knowledge and commented list. Pap. Avulsos Zool. 60: e20206024 - get paper here
  • ROCHA, CARLOS FREDERICO D.; HELENA G.BERGALLO, JOSÉ P. POMBAL JR., LENA GEISE, MONIQUE VAN SLUYS, RONALDO FERNANDES, ULISSES CARAMASCHI 2004. FAUNA DE ANFÍBIOS, RÉPTEIS E MAMÍFEROS DO ESTADO DO RIO DE JANEIRO, SUDESTE DO BRASIL. Publ. Avul. Mus. Nac., Rio de Janeiro (104): 3-23 - 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.
  • Zaher, Hussam; Fausto Erritto BarboI; Paola Sanchez Martínez; Cristiano Nogueira; Miguel Trefaut Rodrigues; Ricardo Jannini Sawaya 2011. Répteis do Estado de São Paulo: conhecimento atual e perspectivas. Biota Neotropica, 11 (1): 1–15. - get paper here
 
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