Andrena pecosana Cockerell, 1913:104, ♀. ♀, Pecos, New Mexico, August 31 (leg. Cockerell); LaBerge, 1967LaBerge, W.E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae). Bul. Nebr. Univ. State Mus. 7:1-323.:115, Holotype ♀ (United States National Museum, Washington, D.C., No. 21,822). - LaBerge, 1967LaBerge, W.E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae). Bul. Nebr. Univ. State Mus. 7:1-323. (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).
Andrena townsendi Viereck & Cockerell, 1914:49, ♀. ♀, Dripping Spring, Organ Mountains, New Mexico, August 10 (leg. C.H.T. Townsend); LaBerge, 1967LaBerge, W.E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae). Bul. Nebr. Univ. State Mus. 7:1-323.:115, Holotype ♀ (P.H. Timberlake, Riverside, California). Synonymized with Andrena pecosana Cockerell, 1913 by LaBerge, 1967LaBerge, W.E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae). Bul. Nebr. Univ. State Mus. 7:1-323.:113. - 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.:1782 ( listed as synonym of Andrena pecosana Cockerell, 1913).
Andrena colletoides Viereck & Cockerell, 1914:27, ♂ Synonymized with Andrena pecosana Cockerell, 1913 by LaBerge, 1967LaBerge, W.E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae). Bul. Nebr. Univ. State Mus. 7:1-323.:113. - 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.:1782 ( listed as synonym of Andrena pecosana Cockerell, 1913).