Template:Ferreira et al., 2019a

• Ferreira, W.D., Hermes, M.G., Garcete-Barrett, B.R. & Carpenter, J.M. 2019. Two new species of Pirhosigma Giordani Soika (Vespidae, Eumeninae), with an updated catalog for the genus. Journal of Hymenoptera Research, 71: 225–240. DOI: 10.3897/jhr.71.35754  
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Nomenclatural acts

• Date of publication: 30 August 2019
• ZooBank: CCAA9BDD-C4F7-4986-A788-7741361E71C5

New names (2)

• Pirhosigma abregoi Garcete-Barrett & Hermes
• Pirhosigma cambrai Garcete-Barrett & Ferreira