Megachile browni Mitchell, 1934:354, ♂. Holotype ♂, Yuma, Arizon, June, 1905 (U.S.N.M., no. 40568, leg. Hbt. Brown); Mitchell, 1937Mitchell, T.B. 1937. A revision of the genus Megachile in the Nearctic Region. Part VIII. Taxonomy of the subgenus Chelostomoides, Addenda and Index (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 63 (4):381-421.:412, Type ♂ (U.S.N.M., no. 40568). - 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). - As Chalicodoma browni: - 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); Snelling, 1990Snelling, R.R. 1990. A review of the native North American bees of the genus Chalicodoma (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 421:1-39. (distribution).
Megachile felipiana Mitchell, 1937:405, ♀. Type ♀, San Felipe Valley, San Diego County, California, July 24-28, 1920 (San Diego Mus. Nat. Hist.). - Timberlake, 1957Timberlake, P.H. 1957. Notes on the subgenus Chelostomoides of the genus Megachile Latreille (Hymenoptera: Apoidea). The Pan-Pacific Entomologist 33 (3):132. (distribution), 132 ( listed as synonym of Megachile browni Mitchell, 1934). - As Chalicodoma felipiana: - 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.:2073 ( listed as synonym of Chalicodoma browni (Mitchell, 1934)).