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Leposternon octostegum (DUMÉRIL, 1851)

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Higher TaxaAmphisbaenidae, Amphisbaenia, Lacertoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Dumeril's Worm Lizard
Portuguese: Cobra-de-Duas-Cabeças, Cobra-Cega 
SynonymLepidosternon octostegum DUMÉRIL 1851: 150
Lepidosternon otostegum — DUMÉRIL & BOCOURT 1882 (in error)
Leposternon octostegum — PETERS et al. 1970: 169
Leposternon octostegum — GANS 2005: 33
Amphisbaena octostegum — MOTT & VIEITES 2009
Leposternon octostegum — RIBEIRO et al. 2018 
DistributionBrazil (Bahia)

Type locality: ‘‘Brésil’’.  
Reproductionoviparous 
TypesHolotype: MNHN-RA 7055 
DiagnosisDIAGNOSIS: A species of Leposternon with an enlarged, polygonal azygous shield atop the head, which, however, does not exclude the discrete prefrontals, oculars and first temporals shields of the dorsal cephalic area posterior to the rostronasal; one large supralabial and one large infralabial shield on each side of mouth; a large mental shield (postmental shield absent, probably fused with the mental shield); 353–382 ventral, postpectoral halfannuli (Barros-Filho et al. 2019).


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Comment 
EtymologyNamed after Greek octo (ὀκτώ), eight + Greek stegos (στέγος), roof. (DUMÉRIL 1851, Esteban Lavilla, pers. comm., April 2024) 
References
  • Barros-Filho, J. D. de, Freitas, M., Silva, T., Loguercio, M., & Valverde, M. C. 2019. Redescription of Leposternon octostegum (Duméril, 1851), with an identification key for Brazilian Leposternon species, remarks on meristic methodology, and a proposal for pholidosis nomenclature (Squamata: Amphisbaenidae). Journal of Threatened Taxa, 11(1), 13058-13086 - get paper here
  • Costa Valverde, M.C. & Jesus Ferreira D. de 2005. NEM COBRA, NEM DUAS CABEÇAS: QUEM EU SOU? Uma abordagem sobre os Amphisbaenia. Universidade Estadual de Feira de Santana, 10 pp.
  • Couto-Ferreira, Danilo; Moacir Santos Tinôco, Magno Lima Travassos de Oliveira, Henrique Colombini Browne-Ribeiro, Cecil Pergentino Fazolato, Ricardo Marques da Silva, Gilvana Santos Barreto & Marcelo Alves Dias 2011. Restinga lizards (Reptilia: Squamata) at the Imbassaí Preserve on the northern coast of Bahia, Brazil. Journal of Threatened Taxa 3 (8): 1990–2000 - get paper here
  • Duméril, A.M.C. & A. H. A. Duméril 1851. Catalogue méthodique de la collection des reptiles du Muséum d'Histoire Naturelle de Paris. Gide et Baudry/Roret, Paris, 224 pp.
  • Filho, J.D.B.; M.A. Freitas, T.F.S. Silva, M.C.C. Valverde, M.F.C. Loguercio & D. Veríssimo 2013. On the distribution and ecology of Leposternon octostegum: Putting a subterranean reptile species on the map. Wildl. Biol. Pract. 1(9); 1-6, http://dx.doi.org/10.2461/wbp.2013.9.1 - 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
  • Gans, C. 1971. Studies on Amphisbaenians. (4). A review of the amphisbaenid genus Leposternon. Bull. Amer. Mus. Nat. Hist. 144 (6): 379-464 - get paper here
  • Gans, C. 2005. CHECKLIST AND BIBLIOGRAPHY OF THE AMPHISBAENIA OF THE WORLD. Bull. Am. Mus. Nat. Hist. 289: 1-130 - 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
  • Peters, James A.; Donoso-Barros, Roberto & Orejas-Miranda, Braulio 1970. Catalogue of the Neotropical Squamata: Part I Snakes. Bull. US Natl. Mus. 297: 347 pp. - 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
 
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