- As Dianthidium parvum parvum: - Timberlake, 1943Timberlake, P.H. 1943. Racial differentiation in Nearctic species of Dianthidium (Hymenoptera, Apoidea). Journal of the New York Entomological Society 51 (2):71-109. (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).
Dianthidium profugum Cockerell, 1923:90, ♀. Holotype ♀, Puerto Refugio, Angel de la Guardia Island, Gulf of California, May 1, 1921 (Mus. Calif. Acad. Sci., No. 951, leg. F.P. Van Duzee). - 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.:1995 ( listed as synonym of Dianthidium parvum parvum (Cresson, 1878)). - As Dianthidium parvum profugum: - Timberlake, 1949Timberlake, P.H. 1949. The species of Dianthidium of Baja California (Hymenoptera, Megachilidae). The Pan-Pacific Entomologist 25 (3):129-132. (distribution).
Dianthidium parvum heteropoda Schwarz, 1934:4, ♀. Holotype ♀, Boulder County, Colorado (leg. Charles H. Hicks). - 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.:1995 ( listed as synonym of Dianthidium parvum parvum (Cresson, 1878)).
Dianthidium parvum basingeri Timberlake, 1943:97, ♂. Holotype ♂, Silverbell road, 12 miles west of Rillito, Arizona, May 2-5, 1935 (Citrus Experiment Station, leg. A.J. Basinger). - Timberlake, 1943Timberlake, P.H. 1943. Racial differentiation in Nearctic species of Dianthidium (Hymenoptera, Apoidea). Journal of the New York Entomological Society 51 (2):71-109. (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.:1995 ( listed as synonym of Dianthidium parvum parvum (Cresson, 1878)).