SANTOS, J. N. A. D. J.; SILVEIRA, O. T.; CARPENTER, J. M. A new species of the genus Protopolybia Ducke, 1905 (Hymenoptera, Vespidae, Polistinae), with taxonomic contributions to the exigua species-group. Zootaxa, Auckland, New Zealand, v. 4286, n. 3, p. 432–438, 2017. DOI: 10.11646/zootaxa.4286.3.11. Disponível em: https://mapress.com/zt/article/view/zootaxa.4286.3.11. Acesso em: 21 apr. 2025.