Agenia fragilis Fox, 1897:239, ♂. 3 ♂♂, Marurú, April; Waichert et al., 2014Waichert, C., Rodriguez, J. & J.P. Pitts 2014. New additions to the Honduran fauna of spider wasps (Hymenoptera: Pompilidae) with the description of two species. Zootaxa 3873 (5):590-600.:591, Holotype ♂, Santarém (Carnegie Museum of Natural History); Waichert et al., 2018Waichert, C., W.D. Colombo, C.D. von Dohlen & J.P. Pitts 2018. Taxonomic contributions to Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil. Zootaxa 4403 (1):133-153.:141, Holotype ♂, examined (CMNH). - Fox, 1897Fox, W.J. 1897. Contributions to a knowledge of the Hymenoptera of Brazil, No. 2. - Pompilidae. Proceedings of the Academy of Natural Sciences of Philadelphia 49:229-283.:241 (key to the new described species); Waichert et al., 2014Waichert, C., Rodriguez, J. & J.P. Pitts 2014. New additions to the Honduran fauna of spider wasps (Hymenoptera: Pompilidae) with the description of two species. Zootaxa 3873 (5):590-600.:591 (comb. nov.). - As Ageniella fragilis: - Waichert et al., 2014Waichert, C., Rodriguez, J. & J.P. Pitts 2014. New additions to the Honduran fauna of spider wasps (Hymenoptera: Pompilidae) with the description of two species. Zootaxa 3873 (5):590-600. (distribution); Waichert et al., 2018Waichert, C., W.D. Colombo, C.D. von Dohlen & J.P. Pitts 2018. Taxonomic contributions to Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil. Zootaxa 4403 (1):133-153. (distribution); Fernández et al., 2022Fernández, F., J. Rodriguez, C. Waichert, B. Decker & J. Pitts 2022. Twenty two years later: An updated checklist of Neotropical spider wasps (Hymenoptera: Pompilidae). Zootaxa 5116 (4):451-503. (distribution).