Cezário, R.R., Vilela, D.S. and Guillermo-Ferreira, R. 2019. Final instar larva of Franciscagrion longispinum Machado & Bedê, 2015 (Odonata: Coenagrionidae), an endemic species from the springs of the São Francisco river. Zootaxa. 4657, 3 (Aug. 2019), 581–586. DOI:https://doi.org/10.11646/zootaxa.4657.3.10.