Andrena layiae Timberlake, 1951:381, ♀. Holotype ♀, Ensenada, Baja California, Mexico, April 24, 1941 (Citrus Experiment Station, leg. Cockerell); LaBerge & Bouseman, 1970LaBerge, W.E. & J.K. Bouseman 1970. A revision of the bees of the genus Andrena of the Western Hemisphere. Part III. Tylandrena. Transactions of the American Entomological Society 96 (4):543-605.:596, Holotype ♀ (PHT). - Timberlake, 1951Timberlake, P.H. 1951. New and little-known bees of the family Andrenidae from California. Proceedings of the United States National Museum 101 (3281):373-414. (distribution); LaBerge & Bouseman, 1970LaBerge, W.E. & J.K. Bouseman 1970. A revision of the bees of the genus Andrena of the Western Hemisphere. Part III. Tylandrena. Transactions of the American Entomological Society 96 (4):543-605. (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); Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution).