Pepsis decorata Perty, 1833:143,Brasilia australi; Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86.:77, Lectotype ♂, examined and designated by Diller (1990: 75) (Zoologische Staatssammlung, Munich). - Smith, 1855Smith, F. 1855. Catalogue of Hymenopterous Insects in the collection of the British Museum. Part III, Mutillidae and Pompilidae. :203 pp, 5 pl.:190 (listed); Mocsáry, 1894Mocsáry, A. 1894. Species novae vel minus cognitae generis Pepsis Fabr. Természetrajzi Füzetek 17:1-14 .:6 (listed); Lucas, 1895Lucas, R. 1895. Die Pompiliden-Gattung Pepsis. Berliner Entomologische Zeitschrift 39 (4):449-840. (distribution); 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. (distribution), 281 (listed); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution), 250 (listed); Brèthes, 1914Brèthes, J. 1914. Contribution â l'étude des Pepsis. Museo nacional de historia natural de Buenos Aires 26:235-360. (distribution); Lucas, 1919Lucas, R. 1919. Pompiliden-Studien. I. Arch. Naturgesch., A. 83 (5):1-180+3 pls. (distribution); Banks, 1946Banks, N. 1946. Studies of South American Psammocharidae. Part 1. Bulletin of the Museum of Comparative Zoology at Harvard College 96:311-525. (distribution), 377 (key male), 381 (listed), 401 (key male); Hurd, 1952Hurd, P.D. Jr. 1952. Revision of the Nearctic species of the pompilid genus Pepsis (Hymenoptera, Pompilidae). The American Museum of Natural History, Bulletin 98 (article 4):261-334. (distribution); Haupt, 1952Haupt, H. 1952. Alte und neue Pepsis-Arten (Hymenoptera-Sphecoidea) Pompilidae, olim Psammocharidae auct. Nova Acta Leopoldina 15 (109):311-414. (distribution), 333 (key); Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86. (distribution), 34 (key male), 57 (key female), 77 (description female, description male, distribution, listed); Kurczewski et al., 2020Kurczewski, F.E., R.C. West, C. Waichert, K.C. Kissane, D. Ubick & J.P. Pitts 2020. New and unusual host records for North American and South American spider wasps (Hymenoptera: Pompilidae). Zootaxa 4891 (1):1-112. (distribution), 9 (prey); 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).
Pepsis dives Lepeletier, 1845:486, ♀. ♀, Cayenne (Musée de M. Serville). - Lucas, 1895Lucas, R. 1895. Die Pompiliden-Gattung Pepsis. Berliner Entomologische Zeitschrift 39 (4):449-840.:525 ( listed as synonym of Pepsis decorata Perty, 1833); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:250 ( listed as synonym of Pepsis decorata Perty, 1833); Hurd, 1952Hurd, P.D. Jr. 1952. Revision of the Nearctic species of the pompilid genus Pepsis (Hymenoptera, Pompilidae). The American Museum of Natural History, Bulletin 98 (article 4):261-334.:319 ( listed as synonym of Pepsis decorata Perty, 1833); Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86.:77 ( listed as synonym of Pepsis decorata Perty, 1833).
Pepsis praesidialis Taschenberg, 1869:27, ♀. ♀, Parana. Synonymized with Pepsis decorata Perty, 1833 by Lucas, 1895Lucas, R. 1895. Die Pompiliden-Gattung Pepsis. Berliner Entomologische Zeitschrift 39 (4):449-840.:808. - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:251 ( listed as synonym of Pepsis decorata Perty, 1833); Lucas, 1919Lucas, R. 1919. Pompiliden-Studien. I. Arch. Naturgesch., A. 83 (5):1-180+3 pls.:26 ( listed as synonym of Pepsis decorata Perty, 1833); Hurd, 1952Hurd, P.D. Jr. 1952. Revision of the Nearctic species of the pompilid genus Pepsis (Hymenoptera, Pompilidae). The American Museum of Natural History, Bulletin 98 (article 4):261-334.:322 ( listed as synonym of Pepsis decorata Perty, 1833); Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86.:78 ( listed as synonym of Pepsis decorata Perty, 1833).
Pepsis incompleta Brèthes, 1908:234, ♂. ♂, Rep. Argentina?, Lectotype ♂, examined (Museo Argentino de Ciencias Naturales, Buenos Aires), designated by Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86.:78. Synonymized with Pepsis decorata Perty, 1833 by Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86.:78. - Brèthes, 1914Brèthes, J. 1914. Contribution â l'étude des Pepsis. Museo nacional de historia natural de Buenos Aires 26:235-360. (distribution); Lucas, 1919Lucas, R. 1919. Pompiliden-Studien. I. Arch. Naturgesch., A. 83 (5):1-180+3 pls. (distribution); Hurd, 1952Hurd, P.D. Jr. 1952. Revision of the Nearctic species of the pompilid genus Pepsis (Hymenoptera, Pompilidae). The American Museum of Natural History, Bulletin 98 (article 4):261-334. (distribution).
Pepsis decorata opposita Banks, 1946:382, ♀. Type ♀, Januaria, Minas Geraes, Brazil (M. C. Z., no. 26698, leg. Jose Blaser). Synonymized with Pepsis decorata Perty, 1833 by Vardy, 2000Vardy, C.R. 2000. The New World tarantula-hawk wasp genus Pepsis Fabricius (Hymenoptera: Pompilidae). Part 1. Introduction and the P. rubra species-group. Zool. Verh. Leiden 332:1-86.:78.