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Amphisbaena bilabialata (STIMSON, 1972)

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Higher TaxaAmphisbaenidae, Amphisbaenia, Lacertoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesPortuguese: Cobra-de-Duas-Cabeças, Cobra-Cega 
SynonymAnops bilabialatus STIMSON 1972
Anops bilabialatus — VANZOLINI 1999
Anops bilabialatus — GANS 2005: 22
Amphisbaena bilabialatus — MOTT & VIEITES 2009
Amphisbaena bilabialata — COSTA & BÉRNILS 2015 
DistributionBrazil (Mato Grosso)

Type locality: Brazil, Mato Grosso, 260 km N Xavantina  
Reproductionoviparous 
TypesHolotype: MZUSP 21276. Paratypes: BMNH 1971.1028, 1971.1029, UMMZ 131700, MZUSP 21277. 
DiagnosisDIAGNOSIS: A small to medium-sized amphisbaenid (maximum total length 390 mm); body moderately slender, head laterally compressed, a little narrower than the body. Rostral scale high, arcuate, forming a cutting edge, more or less keratinized. Mandibular symphysis reaching the levei ofthe suture between prefrontal and nasal. Lateral and ventral sulci present. A short anterior dorsal sulcus, disorganized, at times contracted into a low crest. Tail cylindrical to the levei of the autotomy annulus (seventh), from then on moderately clavate. Tail tip a blunt process, vertically elongate. Autotomy levei marked by an incomplete ventral annulus, between the 7th and 8th tail annuli. Preanal pores none or two, variable in expression, separated by four segments. Body annuli 354-372, with frequent irregularities; tail annuli 15-17. Dorsal segments to a midbody annulus 12-16, ventral segments 16-20. (Vanzolini 1999)


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Comment 
EtymologyNamed after Latin bi-, two, twice; double; having two + Latin labia, lip; flange. (STIMSON 1972, Esteban Lavilla, pers. comm., April 2024) 
References
  • 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, T.; Honorio Morais, D.; Kawashita-Ribeiro, R.A. 2008. Reptilia, Squamata, Amphisbaenidae, Anops bilabialatus: Distribution extension, meristic data, and conservation. Check List 4 (2): 146-150 - 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
  • PEREZ, RENATA; SÍRIA RIBEIRO & MÁRCIO BORGES-MARTINS 2012. Reappraisal of the taxonomic status of Amphisbaena prunicolor (Cope 1885) and Amphisbaena albocingulata Boettger 1885 (Amphisbaenia: Amphisbaenidae). Zootaxa 3550: 1–25 - get paper here
  • Ribeiro, SÍria; Carolina Castro-Mello, Cristiano Nogueira 2009. New Species of Anops Bell, 1833 (Squamata, Amphisbaenia) from Jalapão Region in the Brazilian Cerrado. Journal of Herpetology 43 (1):21-28 - get paper here
  • RIBEIRO, SÍRIA; JERRIANE O. GOMES, HELDER LÚCIO RODRIGUES DA SILVA, CARLOS EDUARDO D. CINTRA, NELSON JORGE DA SILVA JR. 2016. A new two-pored species of Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado, with a key to the two-pored species of Amphisbaena. Zootaxa 4147 (2): 124–142 - get paper here
  • Stimson 1972. A new species of Anops from Mato Grosso, Brazil (Reptilia: Amphisbaenia). Bull. British Mus. Nat. Hist. (Zool.) 24: 205-212 - get paper here
  • Vanzolini,P.E. 1999. On Anops (Reptilia: Amphisbaenia: Amphisbaenidae). Papeis Avulsos de Zool., São Paulo, 41 (1): 1-37 - get paper here
 
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