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Amphisbaena cuiabana (STRUSSMAN & CARVALHO, 2001)

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Higher TaxaAmphisbaenidae, Amphisbaenia, Lacertoidea, Squamata
Subspecies 
Common NamesPortuguese: Cobra-de-Duas-Cabeças-de-Cuiabá 
SynonymCercolophia cuiabana STRUSSMAN & CARVALHO 2001
Cercolophia cuiabana — GANS 2005: 26
Amphisbaena cuiabana — MOTT & VIEITES 2009 
DistributionW Brazil (Mato Grosso)

Type locality: Brazil, Mato Grosso, Cuiaba´ (15°36’S, 56°06’W).  
Reproductionoviparous 
TypesHolotype: ZUEC 2083. Paratypes: ZUEC 2084–2091. 
DiagnosisStrüssmann and Carvalho (2001) considered as diagnostic characters for A. cuiabana the presence of four precloacal pores and the highest number of body annuli (286-292) among its congeners. In fact, A. cuiabana only has fewer body annuli than A. supernumeraria (333-337), a northeast Brazilian species of amphisbaenid recently described (Mott et al. 2009). Authors when describing A. cuiabana mentioned the presence of a constriction site on 9th or 10th tail annuli, and they speculate the possibility of tail autotomy in this species, although they could not find any specimen with autotomized tail. With the additional specimens described by Silva et al. 2016, the range of the number of body annuli for A. cuiabana, changes from 282-286 to 278-309, and the tail annuli from 17-20 to 18-20 (with an autotomic site on annulus 8th). The largest specimen known for the species is 316 mm snout-vent length, and it seems that male has longer tails than female. The nasorostral scale is fused with nasals in some specimens (47 %), but not in all (53 %) as previously noticed by Strüssmann and Carvalho (2001). 
CommentMorphology: This species is one of ~20 species of Amphisbaena with two precloacal pores (Ribeiro et al. 2019). 
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
  • 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
  • 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
  • Silva, P.C.; Mott T, Kawashita-Ribeiro R 2016. Reptilia, Squamata, Amphisbaenia, Amphisbaena cuiabana (Strüssmann and Carvalho, 2001): Range extension in the state of Mato Grosso, Brazil. Check List 6(4): 644-645 - get paper here
  • Strussmann C and Carvalho MA 2001. Two new species of Cercolophia Vanzolini 1992 from the state of Mato Grosso, western Brazil (Reptilia, Amphisbaenia, Amphisbaenidae). Boll. Mus. Reg. Sci. Nat. Torino 18: 487-505
  • Strussmann, Christine & Tami Mott 2009. Sympatric amphisbaenids from Manso Dam region, Mato Grosso State, Western Brazil, with the description of a new two-pored species of Amphisbaena (Squamata, Amphisbaenidae). Studies on Neotropical Fauna and Environment, 44 (1): 37 – 46 - get paper here
 
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