Melissodes sila LaBerge, 1956:1002, ♂♀. Holotype ♂, Allotype ♀, near San Simon, Arizona, July 12, 1952 (Snow Entomological Museum, leg. R.H. & L.D. Beamer, W.E. LaBerge & Cheng Liang). - LaBerge, 1956LaBerge, W.E. 1956. A revision of the bees of the genus Melissodes in North and Central America. Part I. (Hymenoptera, Apidae). The University of Kansas Science Bulletin 37 (2):911-1194. (distribution). - As Svastra sila: - LaBerge, 1958LaBerge, W.E. 1958. Notes on the North and Central America bees of the genus Svastra Holmberg (Hymenoptera: Apidae). Journal of the Kansas Entomological Society 31 (4):266-273. (distribution), 272 (comb. nov.); LaBerge, 1963LaBerge, W.E. 1963. Records of the genus Svastra in North America with the description of a new species (Hymenoptera: Apidae). Journal of the Kansas Entomological Society 36 (1):52-56. (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).