GARRISON, R. W. Review of Oxystigma Selys with the synonymy of Oxystigma williamsoni Geijskes (Odonata: Heteragrionidae). Zootaxa, Auckland, New Zealand, v. 3780, n. 2, p. 347–364, 2014. DOI: 10.11646/zootaxa.3780.2.7. Disponível em: https://mapress.com/zt/article/view/zootaxa.3780.2.7. Acesso em: 12 apr. 2025.