Cardoso, M. Z., M. R. Brito, and M. B. Lion. “Confirmation of the Northermost Population of the Endangered Butterfly Heliconius Nattereri C. Felder & R. Felder, 1865 (Lepidoptera: Nymphalidae)”. Biota Neotropica, vol. 17, no. 4, Jan. 2017, //www.biotaneotropica.org.br/BN/article/view/1474.