Perdita echinocacti Timberlake, 1954:360, ♂♀. Danforth, 1996Danforth, B.N. 1996. Phylogenetic analysis and taxonomic revision of the Perdita subgenera Macrotera, Macroteropsis, Macroterella and Cockerellula (Hymenoptera: Andrenidae). The University of Kansas Science Bulletin 55 (6):635-692.:672, Holotype ♂ (CAS, No. 14499). - Timberlake, 1954Timberlake, P.H. 1954. A revisional study of the bees of the genus Perdita F. Smith, with special reference to the fauna of the Pacific Coast (Hymenoptera, Apoidea). Part I. University of California Publications In Entomology 9 (6):345-432. (distribution); Timberlake, 1960Timberlake, P.H. 1960. A revisional study of the bees of the genus Perdita F. Smith, with special reference to the fauna of the Pacific Coast (Hymenoptera, Apoidea). Part IV. University of California Publications In Entomology 17 (1):1-156. (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); Danforth, 1996Danforth, B.N. 1996. Phylogenetic analysis and taxonomic revision of the Perdita subgenera Macrotera, Macroteropsis, Macroterella and Cockerellula (Hymenoptera: Andrenidae). The University of Kansas Science Bulletin 55 (6):635-692. (distribution).
Perdita tepicensis Timberlake, 1968:5, ♂. Holotype ♂, West of Tepic, Nayarit, 1,600 feet, Mexico, Aug. 19, 1961 (University of Kansas, Lawrence, leg. C.F. Bennett); Danforth, 1996Danforth, B.N. 1996. Phylogenetic analysis and taxonomic revision of the Perdita subgenera Macrotera, Macroteropsis, Macroterella and Cockerellula (Hymenoptera: Andrenidae). The University of Kansas Science Bulletin 55 (6):635-692.:672, Holotype ♂ (KU). Synonymized with Perdita echinocacti Timberlake, 1954 by Danforth, 1996Danforth, B.N. 1996. Phylogenetic analysis and taxonomic revision of the Perdita subgenera Macrotera, Macroteropsis, Macroterella and Cockerellula (Hymenoptera: Andrenidae). The University of Kansas Science Bulletin 55 (6):635-692.:672. - As Macrotera tepicensis: - 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).