Oxybelus fossor Rohwer & Cockerell, 1908:179, ♀. ♀, Mesilla Park, N. M., College campus, June 7, '99 (leg. Ckll.). - 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); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139. (distribution).
Oxybelus umbrosus Mickel, 1916:432, Muma, 1952Muma, M.H. 1952. Insect types in the collections of the University of Nebraska State Museum. Bulletin of the University of Nebraska State Museum 3 (8):1-35.:22, Type ♂ (University of Nebraska State Museum). - 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.:1655 ( listed as synonym of Oxybelus fossor Rohwer & Cockerell, 1908); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:44 ( listed as synonym of Oxybelus fossor Rohwer & Cockerell, 1908).
Oxybelus puente Pate, 1943:125, ♂♀. Allotype ♀, Riverside, California, July 9, 1933 (leg. P.H. Timberlake); Holotype ♂, Riverside, California, July 9, 1933 (leg. P.H. Timberlake). - 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.:1655 ( listed as synonym of Oxybelus fossor Rohwer & Cockerell, 1908); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:44 ( listed as synonym of Oxybelus fossor Rohwer & Cockerell, 1908).