Planiceps luxus Banks, 1914:304,National City, Calif., 15 May (leg. Van Duzee); 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.:48, Type ♀ (MCZ, no. 13,704). - Banks, 1914Banks, N. 1914. New species of Psammocharidae. Journal of the New York Entomological Society 22 (4):300-306.:304 (listed); Banks, 1919Banks, N. 1919. The Psammocharidae of western North America. Bull. Mus. Comp. Zool. 63:229-248. (distribution), 241 (key), 242 (listed); 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.:90 (listed); Wasbauer & Kimsey, 1985Wasbauer M.S. & L.S. Kimsey 1985. California spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Bul. Calif. Ins. Surv. 26:1-130.:8 (listed). - As Aporus luxus: - 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.:89 (key female), 90 (comb. nov., description female, description male, distribution, key male); 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); Wasbauer & Kimsey, 1985Wasbauer M.S. & L.S. Kimsey 1985. California spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Bul. Calif. Ins. Surv. 26:1-130.:8 (listed); Evans, 1997Evans, H.E. 1997. Spider wasps of Colorado (Hymenoptera, Pompilidae): An annotated checklist. The Great Basin Naturalist 57 (3):189-197. (distribution); 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), 42 (prey); Vanoye-Eligio et al., 2021Vanoye-Eligio, M., M. del C. Gómez-Camal, B. del R. Martín-Canché, M. Rosas-Mejía, J.V. HortaVega & V. Vanoye-Eligio 2021. Current knowledge of the family Pompilidae (Hymenoptera: Vespoidea) in Mexico: diversity and geographical distribution. Zootaxa 5071 (4):505-536. (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); Kurczewski & West, 2022Kurczewski, F.E. & R.C. West 2022. Host selection and nesting behavior of Nearctic trapdoor spider-hunting spider wasps (Hymenoptera: Pompilidae: Pepsinae, Pompilinae). Insecta Mundi 0959:1-24. (distribution), 5 (hosts). - As Aporus luxus luxus: - 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), 91 (listed); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution).
Planiceps assimilis Banks, 1917:100, ♀. Holotype ♀, Brit. Columbia: Penicton, August (M. C. Z., 10,009, leg. J. B. Wallis); 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.:48, Type ♀ (MCZ, no. 10,009). Synonymized with Aporus luxus (Banks, 1914) by 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.:48. - Banks, 1919Banks, N. 1919. The Psammocharidae of western North America. Bull. Mus. Comp. Zool. 63:229-248. (distribution), 241 (key), 242 (listed); 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.:91 (listed); Wasbauer & Kimsey, 1985Wasbauer M.S. & L.S. Kimsey 1985. California spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Bul. Calif. Ins. Surv. 26:1-130.:8 ( listed as synonym of Aporus luxus (Banks, 1914)). - As Aporus luxus assimilis: - 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), 91 (listed); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution).