Cryptocheilus birkmanni Banks, 1926:202, sex not indicated.Fedor, Lee Co., Texas, May (leg. Birkmann);Galveston, Texas (leg. Brues). - Banks, 1941Banks, N. 1941. A partition of our Cryptochilus, with some new Psammocharidae (Hymenoptera). The Canadian Entomologist 73:119-122.:120 (comb. nov.); Townes, 1957Townes, H. 1957. Nearctic wasps of the subfamilies Pepsinae and Ceropalinae. Bulletin of the United States National Museum 209:1-286.:79 (listed). - As Chilochares birkmanni: - As Cryptocheilus idoneum birkmanni: - Townes, 1957Townes, H. 1957. Nearctic wasps of the subfamilies Pepsinae and Ceropalinae. Bulletin of the United States National Museum 209:1-286.:79 (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); Hook et al., 1990Hook, A.W., H.E. Evans & J.E. Gillaspy 1990. Pompilid wasps of Brackridge Field Laboratory and of the Greater Austin Area. Sphecos 20:17-18. (distribution); Evans, 1997Evans, H.E. 1997. Spider wasps of Colorado (Hymenoptera, Pompilidae): An annotated checklist. The Great Basin Naturalist 57 (3):189-197. (distribution); Wasbauer & Kimsey, 2010Wasbauer M.S. & Kimsey, L.S. 2010. The Pompilidae of the Algodones Dunes, California, with description of new species (Hymenoptera: Pompilidae). The Pan-Pacific Entomologist 86 (1):2-9. (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).