Episyron quinquenotatus hurdi Evans, 1950:221, ♂♀. Allotype ♂, Eldorado Co., Calilf., Chile Bar (CAS); Holotype ♀, California: Contra Costa Co., Antioch, 24 Oct. 1948 (CAS, leg. P.D.Hurd); Paratypes 45 ♂♂, 5 July 1948 (leg. P.D.Hurd); Paratypes 63 ♀♀. - Evans, 1950Evans, H.E. 1950. A taxonomic study of the Nearctic spider wasps belonging to the tribe Pompilini (Hymenoptera: Pompilidae). Part 1. Transactions of the American Entomological Society 75:133-270. (distribution), 215 (key female), 217 (key male), 222 (biology); Junco y Reyes, 1963Junco y Reyes, J.J. 1963. Himenópteros de Espana. Fam. Pompilidae (=Psammocharidae) Gens. Episyron Schdt., Batozonellus Arnd., Ctenostegus Hpt., Schistonyx Sauss. y Aporinellus Bks. EOS Revista Española de Entomologia 38:486-547. (distribution); 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); 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); 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.:29 (listed); Evans, 1997Evans, H.E. 1997. Spider wasps of Colorado (Hymenoptera, Pompilidae): An annotated checklist. The Great Basin Naturalist 57 (3):189-197. (distribution); 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).