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Cercosaura bassleri RUIBAL, 1952

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Higher TaxaGymnophthalmidae (Cercosaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards) 
Common NamesOcellated Tegu 
SynonymCercosaura ocellata bassleri RUIBAL 1952: 499
Cercosaura ocellata bassleri — PETERS et al. 1970: 91
Cercosaura ocellata bassleri — AVILA-PIRES 1995: 365
Cercosaura ocellata bassleri — LEHR 2002
Cercosaura ocellata — FRANÇA & VENÂNCIO 2010: 76
Cercosaura ocellata ocellata — CUNHA 1961: 131 (part)
Cercosaura ocellata — DOAN 2003: 104 (part)
Cercosaura ocellata — OLIVEIRA & MOURA 2013: 387 (part)
Cercosaura ocellata — SALES et al., 2014: 1531 (part)
Cercosaura bassleri — TORRES-CARVAJAL et al. 2015 

Type locality: Perené, Rio Perené, Peru.  
TypesHolotype: AMNH 23191, adult male 
DiagnosisDiagnosis.— Cercosaura with maximum female SVL 64.0 mm and maximum male SVL 64.6 mm; snout round; frontonasal single; nasal and frenocular undivided; loreal divided into upper and lower scales, lower one in contact with first supralabial; four infralabials to posterior margin of eyes; four pairs of chinshields; 13–25 neck scales in a vertical row; 24–39 scales around midbody; dorsal scales hexagonal, keeled and organized in longitudinal rows, twice as long as scales on flanks, 31–37 along a middorsal line, from occipitals to anterior margin of hind limbs; six longitudinal rows of ventrals; precloacal plate usually with two anterior and two posterior scales in males, two anterior and two or four posterior scales in females; 3–8 femoral pores on one side in males, 3–7 in females; 6–8 lamellae under finger I; head, throat and body ventrally predominantly white or cream (in adult males it may become orange), usually with black blotches (from Sturaro et al. 2018). 
CommentThe only character that seems to devide ocellata and bassleri is an undivided (ocellata) or divided (bassleri) loreal scale, although other distinguishing (but more variable) characters exist.

Distribution: TORRES-CARVAJAL et al. 2015 almost exclusively used samples from Ecuador for their phylogenetic analysis while Cercosaura ocellata and its subspecies occur over a larger area in South America (mostly Brazil). 
  • Avila-Pires,T.C.S. 1995. Lizards of Brazilian Amazonia (Reptilia: Squamata). Zoologische Verhandelingen 299: 1-706 - get paper here
  • Echevarría LY, Barboza AC, Venegas PJ. 2015. A new species of montane gymnophthalmid lizard, genus Cercosaura (Squamata: Gymnophthalmidae), from the Amazon slope of northern Peru. Amphibian & Reptile Conservation 9(1): 34–44 (e109) - get paper here
  • Lehr, E. 2002. Amphibien und Reptilien in Peru. Natur und Tier-Verlag (Münster), 208 pp. - get paper here
  • RIBEIRO-JÚNIOR, MARCO A. & SILVANA AMARAL 2017. Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. IV. Alopoglossidae, Gymnophthalmidae Zootaxa 4269 (2): 151-196
  • Ruibal, R. 1952. Revisionary notes of some South American Teiidae. Bull. Mus. Comp. Zool. Harvard 106: 475-529 (477?)-529. - get paper here
  • Sturaro, M. J., Rodrigues, M. T., Colli, G. R., Knowles, L. L., & Avila-Pires, T. C. S. 2018. Integrative taxonomy of the lizards Cercosaura ocellata species complex (Reptilia: Gymnophthalmidae). Zoologischer Anzeiger - get paper here
  • Torres-Carvajal, Omar; Simón E. Lobos, Pablo J. Venegas 2015. Phylogeny of Neotropical Cercosaura (Squamata: Gymnophthalmidae) lizards. Molecular Phylogenetics and Evolution 93: 281–288 - get paper here
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