Polistes angulata Fabricius, 1804:275, sex not indicated.America meridionali (Mus. Dom. Lund, leg. Smidt); Richards, 1978Richards, O.W. 1978. The social wasps of the Americas excluding the Vespinae. British Museum (Natural History), London. 1-567.:243, Type ♀ (UZM, Copenhagen). - As Agelaia angulata: - Andena et al., 2024Andena, S.R., F.B. Noll, M.N. Daza & J.M. Carpenter 2024. The phylogeny of the species of the genus Agelaia Lepeletier, 1836, one of the basalmost groups of Epiponini, with notes on male genitalia (Hymenoptera: Vespidae; Polistinae). American Museum Novitates 4009:1-48. (distribution). - As Stelopolybia angulata: - Rohwer, 1915Rohwer, S.A. 1915. Vespoid and sphecoid Hymenoptera collected in Guatemala by W. P. Cockerell. Proceedings of the United States National Museum 47:513-523. (distribution). - As Stelopolybia angulata angulata: - Richards, 1978Richards, O.W. 1978. The social wasps of the Americas excluding the Vespinae. British Museum (Natural History), London. 1-567. (distribution).
Megacanthopus ruficornis Cameron, 1912:217, ♀. ♀, British Guiana (Georgetown Museum); Richards, 1978Richards, O.W. 1978. The social wasps of the Americas excluding the Vespinae. British Museum (Natural History), London. 1-567.:243, Holotype ♀, examined (BMNH). - Richards, 1978Richards, O.W. 1978. The social wasps of the Americas excluding the Vespinae. British Museum (Natural History), London. 1-567.:243 ( listed as synonym of Stelopolybia angulata (Fabricius, 1804)).