Planiceps Herbertii Fox, 1897:261, ♀. Holotype ♀, Santarem. - 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.:264 (key [key to Brazilian species]); Bradley, 1944Bradley, J.C. 1944. A preliminary revision of the Pompilinae (exclusive of the tribe Pompilini) of the Americas (Hymenoptera: Pompilidae). Transactions of the American Entomological Society 70:23-157.:128 (listed). - As Euplaniceps herberti: - Bradley, 1944Bradley, J.C. 1944. A preliminary revision of the Pompilinae (exclusive of the tribe Pompilini) of the Americas (Hymenoptera: Pompilidae). Transactions of the American Entomological Society 70:23-157.:126 (key); Banks, 1947Banks, N. 1947. Studies of South American Psammocharidae. Part 2. Museum of Comparative Zoology at Harvard College, Bulletin 99:371-486. (distribution), 447 (listed). - As Euplaniceps herbertii: - Bradley, 1944Bradley, J.C. 1944. A preliminary revision of the Pompilinae (exclusive of the tribe Pompilini) of the Americas (Hymenoptera: Pompilidae). Transactions of the American Entomological Society 70:23-157. (distribution), 127 (key), 128 (comb. nov., description female); Cambra et al., 2013Cambra, R.A., P.E. Corro & A. Santos 2013. Nuevos aportes al conocimiento del género Euplaniceps Haupt (Hymenoptera: Pompilide). Scientia (Panamá) 23 (1):69-80. (distribution); Castro-Huertas et al., 2014Castro-Huertas, V., J.P. Pitts, J. Rodriguez, C. Waichert & F. Fernández 2014. New records of spider wasps (Hymenoptera, Pompilidae) from Colombia. ZooKeys 443:35-44. (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); 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).