Ageniella nigribasis Banks, 1925:331, ♀. Type ♀, Barro Colorado, 13 July, 1924 (M. C. Z., 15,341); Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442.:31, Type ♀ (MCZ, no. 15,341). - As Epipompilus nigribasis: - Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442. (distribution), 31 (comb. nov.); Evans, 1967Evans, H.E. 1967. Studies on Neotropical Pompilidae III. Additional notes on Epipompilus Kohl. Breviora 273:1-15. (distribution); Evans, 1976Evans, H.E. 1976. Studies on Neotropical Pompilidae. X. Supplementary notes. Psyche 83:263-270. (distribution); Santos & Noll, 2010Santos, E.F. dos & F.B. Noll 2010. Additions to the known distribution of Epipompilus aztecus (Cresson, 1869) and E. excelsus (Bradley, 1944) (Hymenoptera: Pompilidae). Psyche 2010:1-3. (distribution); Fernández et al., 2017Fernández, F., V. Castro, J. Rodríguez, C. Waichert & J.P. Pitts 2017. Avispas cazadoras de arañas de Colombia (Hymenoptera: Pompilidae). Proceditor Ltda., Bogotá, D. C., Colombia. (distribution); Corro-Chang et al., 2017Corro-Chang, P., R.A. Cambra & A.Santos 2017. Listado sinóptico de Pompilidae (Hymenoptera) presentes en el Parque Nacional Coiba, República de Panamá. Tecnociencia 19 (1):19-31. (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).