Perdita trisignata Cockerell, 1896:76, ♀. Holotype ♀, California (leg. Fox). - Cockerell, 1903Cockerell, T.D.A. 1903. A catalogue of the bees of California. Psyche 10:74-78. (distribution); 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); 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). - As Perdita trisignata trisignata: - 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).
Perdita ruficauda Cockerell, 1916:44 - Cockerell, 1922Cockerell, T.D.A. 1922. Bees in the collection of the United States National Museum. 4. Proceedings of the United States National Museum 60 (2413):1-20. (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.:1880 ( listed as synonym of Perdita trisignata trisignata Cockerell, 1896).