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Leposternon maximus RIBEIRO, NOGUEIRA, CINTRA, DA SILVA & ZAHER, 2011

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Higher TaxaAmphisbaenidae, Amphisbaenia, Lacertoidea, Sauria, Squamata (lizards)
Common NamesPortuguese: Cobra-de-Duas-Cabeças, Cobra-Cega 
SynonymLeposternon maximus RIBEIRO, NOGUEIRA, CINTRA, DA SILVA & ZAHER 2011
Leposternon sp. – RECODER & NOGUEIRA 2007: 270
Leposternon polystegum – CINTRA et al. 2009: 573
Leposternon maximus — RIBEIRO et al. 2018 
DistributionBrazil (Goiás, Minas Gerais)

Type locality: “santa edwiges ii hydro‐electric power plant (14°21’15” S; 46°11’40”W), buritinópolis municipality, state of Goiás, brazil”, 700 m elevation.  
TypesHolotype: MZUSP 99198 (field number 098) (figs. 2, 3), male, collected on 05 september 2005 by carlos e. D. cintra. Paratypes: MZUSP 
DiagnosisDiagnosis: Leposternon maximus sp. nov. differs from all amphisbaenians by presenting 404‐448 dorsal postpec‐ toral half‐annuli and 408‐448 ventral postpectoral half‐ annuli. the new species also differs from all south american amphisbaenians, (except from species of the genus Leposternon) for presenting nostrils opening on the ventral surface of snout; nasal absent; rostral and nasals fused into a single shield; gular portion without segmental cover; and prefrontals bone with nasal process long and ‘T’ shaped. Differs from all south american amphisbaenians, except of Aulura anomala and other species of Leposternon for presenting frontal portion of head strongly depressed; and pectoral shields with irregular form, not disposed in dermal annuli. 
CommentThe authors describe that species as Leposternon maximusa although Leposternon has been synonymized with Amphisbaena by MOTT & VIEITES 2009. RIBEIRO et al. 2011 argue that MOTT & VIEITES’s synonymization is premature. See a diagnosis of Leposternon under Leposternon microcephalus WAGLER 1824, the type species of the genus Leposternon WAGLER 1824. 
Etymologythe specific epithet maximus, from the Greek, is used herein in allusion to its higher number of half‐ annuli when compared to other amphisbaenians. 
  • Cintra, C. E. D., H. L. Rodrigues da. Silva, and N. J. da Silva Jr. 2009. Herpetofauna santa edwiges i and ii hydroelectric power plants, state of Goiás, brazil. Check List 5 (3): 570‐576. - get paper here
  • 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
  • Mott, Tamí; David R. Vieites 2009. Molecular phylogenetics reveals extreme morphological homoplasy in Brazilian worm lizards challenging current taxonomy. Molecular Phylogenetics and Evolution 51 (2): 190-200 - get paper here
  • Recoder, R. and C. Nogueira. 2007. Composição e diversidade de répteis na região sul do parque nacional Grande sertão Veredas, brazil central. Biota Neotropica, 7: 267‐278. - get paper here
  • Ribeiro, Síria; Adriano Lima Silveira and Alfredo P. Santos-jr 2018. A New Species of Leposternon (Squamata: Amphisbaenidae) from Brazilian Cerrado with a Key to Pored Species. Journal of Herpetology 52 (1): 50-58 - get paper here
  • RIBEIRO, SIRIA; ALFREDO P. SANTOS-JR, HUSSAM ZAHER 2015. A new species of Leposternon Wagler, 1824 (Squamata, Amphisbaenia) from northeastern Argentina. Zootaxa 4034 (2): 309–324 - get paper here
  • Ribeiro, Síria; Cristiano Nogueira, Carlos Eduardo D. Cintra, Nelson Jorge Da Silva, and Hussam Zaher 2012. Description of a New Pored Leposternon (Squamata, Amphisbaenidae) from the Brazilian Cerrado. South American J. Herp. 6 (3): 177-188 [2011] - get paper here
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