R. R. Cezário, D. S. Vilela, and R. Guillermo-Ferreira, “Final instar larva of Franciscagrion longispinum Machado & Bedê, 2015 (Odonata: Coenagrionidae), an endemic species from the springs of the São Francisco river”, Zootaxa, vol. 4657, no. 3, pp. 581–586, Aug. 2019.