Melissodes humilior Cockerell, 1903:447, ♂. ♀, Organ, New Mexico, Sept. 28 (leg. Cockerell); LaBerge, 1961LaBerge, W.E. 1961. A revision of the bees of the genus Melissodes in North and Central America. Part III. (Hymenoptera, Apidae). The University of Kansas Science Bulletin 42 (5):283-663.:594, Holotype ♀ (Natural History Museum of the University of Colorado at Boulder). - Cockerell, 1906Cockerell, T.D.A. 1906. The North American bees of the family Anthophoridae. Transactions of the American Entomological Society 32 (1):63-116. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1913Cockerell, T.D.A. 1913. Names applied to the Eucerine bees of North America. Proceedings of the United States National Museum 43:261-273. (distribution); Cockerell, 1914Cockerell, T.D.A. 1914. Descriptions and records of bees. - LVII. The Annals and Magazine of Natural History ser. 8: v. 13 (75):277-286. (distribution); Lutz & Cockerell, 1920Lutz, F.E. & T.D.A. Cockerell 1920. Notes on the distribution and bibliography of North American bees of the families, Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae. Bull. Amer. Mus. Nat. Hist 42 (15):491-641. (distribution); LaBerge, 1961LaBerge, W.E. 1961. A revision of the bees of the genus Melissodes in North and Central America. Part III. (Hymenoptera, Apidae). The University of Kansas Science Bulletin 42 (5):283-663. (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); 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).
Melissodes intermediella Cockerell, 1905:102, ♀. Holotype ♀, Los Angeles, Calif. (leg. Davidson); LaBerge, 1961LaBerge, W.E. 1961. A revision of the bees of the genus Melissodes in North and Central America. Part III. (Hymenoptera, Apidae). The University of Kansas Science Bulletin 42 (5):283-663.:594, Holotype ♀ (Natural History Museum of the University of Colorado at Boulder). Synonymized with Melissodes humilior Cockerell, 1903 by LaBerge, 1961LaBerge, W.E. 1961. A revision of the bees of the genus Melissodes in North and Central America. Part III. (Hymenoptera, Apidae). The University of Kansas Science Bulletin 42 (5):283-663.:592. - Cockerell, 1906Cockerell, T.D.A. 1906. The North American bees of the family Anthophoridae. Transactions of the American Entomological Society 32 (1):63-116. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Lutz & Cockerell, 1920Lutz, F.E. & T.D.A. Cockerell 1920. Notes on the distribution and bibliography of North American bees of the families, Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae. Bull. Amer. Mus. Nat. Hist 42 (15):491-641. (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.:2147 ( listed as synonym of Melissodes humilior Cockerell, 1903).