Melitta californica Viereck, 1909:47, ♀. Type ♀, Santa Margarita Island, Lower California (California Academy of Sciences, San Francisco, Cal.); Michez & Eardley, 2007Michez, D. & C. Eardley 2007. Monographic revision of the bee genus Melitta Kirby 1802 (Hymenoptera: Apoidea: Melittidae). Annales de la Société Entomoloqique de France (N.S.) 43 (4):379-440.:400, Holotype ♂ (CAS). - Cockerell, 1937Cockerell, T.D.A. 1937. Bees collected in Arizona and California in the spring of 1937. American Museum Novitates 948:1-15. (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).
Melitta wilmatae Cockerell, 1937:3, ♀. Holotype ♀, Arizona: Dublin (near Yuma), March 8, 1937 (leg. Wilmatte P. Cockerell); Michez & Eardley, 2007Michez, D. & C. Eardley 2007. Monographic revision of the bee genus Melitta Kirby 1802 (Hymenoptera: Apoidea: Melittidae). Annales de la Société Entomoloqique de France (N.S.) 43 (4):379-440.:400, Holotype ♀ (AMNH). - Michez & Eardley, 2007Michez, D. & C. Eardley 2007. Monographic revision of the bee genus Melitta Kirby 1802 (Hymenoptera: Apoidea: Melittidae). Annales de la Société Entomoloqique de France (N.S.) 43 (4):379-440.:400 ( listed as synonym of Melitta californica Viereck, 1909).
Melitta maritima Cockerell, 1941:344, ♂. Holotype ♂, Ensenada, Baja California, April 13, 1941; Michez & Eardley, 2007Michez, D. & C. Eardley 2007. Monographic revision of the bee genus Melitta Kirby 1802 (Hymenoptera: Apoidea: Melittidae). Annales de la Société Entomoloqique de France (N.S.) 43 (4):379-440.:401, Holotype ♂ (lost from UC).