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Amphisbaena filiformis RIBEIRO, GOMES, RODRIGUES DA SILVA, CINTRA & DA SILVA, 2016

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Higher TaxaAmphisbaenidae, Amphisbaenia, Lacertoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesPortuguese: Cobra-de-Duas-Cabeças, Cobra-Cega 
SynonymAmphisbaena filiformis RIBEIRO, GOMES, RODRIGUES DA SILVA, CINTRA & DA SILVA 2016 
DistributionBrazil (Tocantins: Babaçulândia and Estreito municipalities)

Type locality: municipality of Babaçulândia (07o14’45” S, 47o46’38” W, 156 m), State of Tocantins, Brazil  
Reproduction 
TypesHolotype: MPEG 27916 (field number: EDR 730), an adult male, collected on 01 February 2010 by Carlos Eduardo D. Cintra. Paratypes. Male: MPEG 27917; indeterminate sex: MPEG 27915, MPEG 27918 and MPEG 27919; same data as the holotype, but collected on 08 February 2010. Males: MZUSP 102046, MZUSP 102048, MZUSP 102049 and MZUSP 102044; female: MZUSP 102047 and MZUSP 102045; all from Estreito municipality (06°35'13" S, 47°27'39" W), State of Maranhão, Brazil, collected by Carlos Eduardo D. Cintra, between 18 January and 27 April 2011. 
DiagnosisDiagnosis: (1) snout rounded; (2) 328–342 body annuli; (3) absence of major fusion of head shields, being shields of dorsal, lateral and ventral head portion distincts; (4) two precloacal pores; (5) 12–14 dorsal and 14–16 ventral segments per midbody annulus; (6) autotomic site between 9–10th caudal annuli; (7) absent of chevron-shaped anterior body annuli; (8) precloacals pores arranged in a continuous series of the precloacal half-annuli; (9) 20–23 caudal annuli; (10) distinct dorsal sulci; (11) head slightly thiner than trunk; (12) tail tip slightly compressed; and (13) postmalar row absent.


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CommentHabitat: sandy soil, among open lowland rainforest, locally characterized by the babaçu palm tree.

Morphology: This species is one of ~20 species of Amphisbaena with two precloacal pores (Ribeiro et al. 2019). 
EtymologyThe specific epithet filiformis is formed from the Latin words filum (= thread) and forma (= shape) in reference to the slender body shape characteristic of the new species. 
References
  • 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
  • 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
  • RIBEIRO, SÍRIA; VÂNIA SÁ, ALFREDO P. SANTOS-JR, ROBERTA GRABOSKI, HUSSAM ZAHER, ANDREI G. GUEDES, SHEILA P. ANDRADE, WILIAN VAZ-SILVA 2019. A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species. Zootaxa 4550 (3): 301–320 - get paper here
 
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