Tetralonia venusta Timberlake, 1961:209, ♂♀. Holotype ♀, 9.6 miles north of Shoshone, Inyo County, California, May 3, 1960 (Citrus Experiment Station, leg. J.W. MacSwain); Dorchin et al., 2018Dorchin, A., B.N. Danforth & T. Griswold 2018. A new genus of eucerine bees endemic to southwestern North America revealed in phylogenetic analyses of the Eucera complex (Hymenoptera: Apidae: Eucerini). Arthropod Systematics & Phylogeny 76 (2):215-234.:225, Holotype ♀ (California Academy of Sciences, No. 14879). - Timberlake, 1961Timberlake, P.H. 1961. A new species of Tetralonia from the deserts of California and Nevada (Hymenoptera: Apoidea). The Pan-Pacific Entomologist 37 (4):209-212. (distribution). - As Protohalonia venusta: - Dorchin et al., 2018Dorchin, A., B.N. Danforth & T. Griswold 2018. A new genus of eucerine bees endemic to southwestern North America revealed in phylogenetic analyses of the Eucera complex (Hymenoptera: Apidae: Eucerini). Arthropod Systematics & Phylogeny 76 (2):215-234. (distribution), 225 (comb. nov.); Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution). - As Synhalonia venusta venusta: - 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).