Gonatopus breviforceps Kieffer, 1904:356, Penati & Olmi, 2011Penati, F. & M. Olmi 2011. Catalogue of Dryinidae, Embolemidae and Sclerogibbidae of the Museo Civico di Storia Naturale 'Giacomo Doria'. Annali del Museo Civico di Storia Naturale di Genova Giacomo Doria 103:71-92.:77, Holotype ♀ ( Museo Civico di Storia Naturale 'Giacomo Doria'); Olmi & Virla, 2014Olmi, M. & Virla, E.G. 2014. Dryinidae of the Neotropical region (Hymenoptera: Chrysidoidea). Zootaxa 3792 (1):1-534.:417, Holotype ♀ (MCSNG). - Virla & Olmi, 1998Virla, E. & M. Olmi 1998. The Dryinidae of Argentina (Hymenoptera - Chrysidoidea). Acta Ent. Chilena 22:19-35. (distribution); Olmi et al., 2000Olmi, M., Virla, E.G. & Fernández, F. 2000. Las avispas Dryinidae de la región Neotropical (Hymenoptera: Chrysidoidea). Biota Colombiana 1 (2):141-163. (distribution); Perez-Gelabert, 2008Perez-Gelabert, D.E. 2008. Arthropods of Hispaniola (Dominican Republic and Haiti): A checklist and bibliography. Zootaxa 1831:1-530. (distribution); Rasmussen & Asenjo, 2009Rasmussen, C. & A. Asenjo 2009. A checklist to the wasps of Peru (Hymenoptera, Aculeata). ZooKeys 15:1-78. (distribution); Olmi & Virla, 2014Olmi, M. & Virla, E.G. 2014. Dryinidae of the Neotropical region (Hymenoptera: Chrysidoidea). Zootaxa 3792 (1):1-534. (distribution); Olmi & Guglielmino, 2016Olmi, M. & A. Guglielmino 2016. The checklist of Dryinidae (Hymenoptera: Chrysidoidea) of French Guiana, with descriptions of two new species of Dryinus Latreille. Israel Journal of Entomology 46:11-29. (distribution); Perez-Gelabert, 2020Perez-Gelabert, D.E. 2020. Checklist, bibliography and quantitative data of the arthropods of Hispaniola. Zootaxa 4749:1-668. (distribution). - As Pachygonatopus breviforceps:
Metagonatopus brasiliensis Ogloblin, 1932:264, Olmi & Virla, 2014Olmi, M. & Virla, E.G. 2014. Dryinidae of the Neotropical region (Hymenoptera: Chrysidoidea). Zootaxa 3792 (1):1-534.:417, Holotype ♀ (FCNM). - Olmi & Virla, 2014Olmi, M. & Virla, E.G. 2014. Dryinidae of the Neotropical region (Hymenoptera: Chrysidoidea). Zootaxa 3792 (1):1-534.:417 ( listed as synonym of Gonatopus breviforceps Kieffer, 1904).