A new species of Atractus (Serpentes: Dipsadidae) from Serra do Cipó, Espinhaço Range, Southeastern Brazil, with proposition of a new species group to the genus

Authors

  • Paulo Passos Universidade Federal do Rio de Janeiro; Museu Nacional; Departamento de Vertebrados
  • Mauro TeixeirA Junior Universidade de São Paulo; Instituto de Biociências; Departamento de Zoologia
  • Renato S. Recoder Universidade de São Paulo; Instituto de Biociências; Departamento de Zoologia
  • Marco Aurélio de Sena Universidade de São Paulo; Instituto de Biociências; Departamento de Zoologia
  • Francisco Dal Vechio Universidade de São Paulo; Instituto de Biociências; Departamento de Zoologia
  • Hugo Bonfim de A. Pinto Instituto Chico Mendes de Conservação da Biodiversidade; Centro Nacional de Pesquisa e Conservação de Répteis e Anfíbios
  • Sônia H.S.T. Mendonça Instituto Chico Mendes de Conservação da Biodiversidade; Centro Nacional de Pesquisa e Conservação de Répteis e Anfíbios
  • José Cassimiro Universidade de São Paulo; Instituto de Biociências; Departamento de Zoologia
  • Miguel Trefaut Rodrigues Universidade de São Paulo; Instituto de Biociências; Departamento de Zoologia

DOI:

https://doi.org/10.1590/S0031-10492013000600001

Keywords:

Atlantic Forest, Campos Rupestres, Atractus species groups, Hemipenial morphology

Abstract

We describe a new species of Atractus from Serra do Cipó, at the southeastern versant of Serra do Espinhaço, an inland mountain range nearly parallel to the Brazilian Atlantic coast. The new species is morphologically similar to A. paraguayensis and A. potschi with which it shares: 15 dorsal scale rows; white occipital region in juvenile specimens; dorsal ground color reddish pink to red (in life) with alternate black transversal spots, blotches or transversal bands; seven upper and lower labial scales; ventrals and subcaudals creamish white; hemipenis slightly bilobed, semicapitate and semicalyculate. The new species differs from both taxa mainly on the basis of exclusive coloration characters (number and shape of transversal bands) and hemipenial morphology (median face of the lobes without ornamentation), besides punctual meristic (number of ventral scales and maxillary teeth) and morphometric (adult snout-vent length) differences. Finally, we provide a discussion regarding the potential affinities of the new species and we redefine some Atractus species groups in order to better accommodate species sharing unique combinations of morphological characters.

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Published

2013-01-01

How to Cite

Passos, P., TeixeirA Junior, M., Recoder, R. S., Sena, M. A. de, Vechio, F. D., Pinto, H. B. de A., Mendonça, S. H., Cassimiro, J., & Rodrigues, M. T. (2013). A new species of Atractus (Serpentes: Dipsadidae) from Serra do Cipó, Espinhaço Range, Southeastern Brazil, with proposition of a new species group to the genus . Papéis Avulsos De Zoologia, 53(6), 75-85. https://doi.org/10.1590/S0031-10492013000600001

Issue

Section

naodefinida

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