FERREIRA, W. D.; OLIVEIRA, L. A. D.; INEZ, T. G.; HERMES, M. G. A new species of Pirhosigma Giordani Soika, 1978 (Hymenoptera, Vespidae: Eumeninae), with additional notes and a key to the species in the genus. Zootaxa, Auckland, New Zealand, v. 4300, n. 2, p. 269–278, 2017. DOI: 10.11646/zootaxa.4300.2.8. Disponível em: https://mapress.com/zt/article/view/zootaxa.4300.2.8. Acesso em: 21 apr. 2025.