Polybia injucunda Saussure, 1853:200, Lectotype ♀, examined (MNHN, Paris), designated by Richards, 1978Richards, O.W. 1978. The social wasps of the Americas excluding the Vespinae. British Museum (Natural History), London. 1-567.:302. - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, IX. Vespidae (Diploptera). Guilelmi Engelmann, 181. (distribution); Cameron, 1912Cameron, P. 1912. The Hymenoptera of the Georgetown Museum. Part III. Timehri: The Journal of the Royal Agricultural Society of British Guiana 3rd ser. (2):207-231. (distribution). - As Megacanthopus injucundus: - Meade-Waldo & Morley, 1914Meade-Waldo, G. & C. Morley 1914. Notes and synonymy of Hymenoptera in the collection of the British Museum. The Annals and Magazine of Natural History ser. 8: v. 14:402-410. (distribution). - As Mischocyttarus injucundus: - Starr & Hook, 2003Starr, C.K. & Hook, A.W. 2003. The aculeate Hymenoptera of Trinidad, West Indies. Occasional Papers o the Department of Life Sciences, University of the West Indies 12:1-31. (distribution); Silveira et al., 2008Silveira, O.T., S.V. da Costa Neto & O.F.M. da Silveira 2008. Social wasps of two wetland ecosystems in brazilian Amazonia (Hymenoptera, Vespidae, Polistinae). Acta Amazonica 38 (2):333-344. (distribution); Rasmussen & Asenjo, 2009Rasmussen, C. & A. Asenjo 2009. A checklist to the wasps of Peru (Hymenoptera, Aculeata). ZooKeys 15:1-78. (distribution).