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Passos, P. et al. 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 (Jan. 2013), 75–85. DOI:https://doi.org/10.1590/S0031-10492013000600001.