Panurgus æthiops Cresson, 1872:259, ♂♀. 10 ♂♀, Texas (leg. Belfrage). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution). - As Calliopsis aethiops: - Cresson, 1879Cresson, E.T. 1879. Catalogue of North American Apidae. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 7:215-232. (distribution). - As Pseudopanurgus aethiops: - Cockerell, 1898Cockerell, T.D.A. 1898. Appendix to article III. Volume XI. Notes on bees taken at Albuquerque, New Mexico, in September, 1897. Bulletin of the University of New Mexico 1:72-73. (distribution); Cockerell, 1899Cockerell, T.D.A. 1899. The bees of Kansas. Entomological News 10 (1):3-4. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1910Cockerell, T.D.A. 1910. Descriptions and records of bees. - XXXII. The Annals and Magazine of Natural History ser. 8: v. 6 (33):272-284. (distribution); Cockerell, 1921Cockerell, T.D.A. 1921. Western bees obtained by the American Museum expeditions. American Museum Novitates 24:1-15. (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).
Protandrenopsis fuscipennis Crawford, 1903:337 - 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.:1852 ( listed as synonym of Pseudopanurgus aethiops (Cresson, 1872)); Michener, 2000Michener, C.D. 2000. The Bees of the World. The John Hopkins University Press, Baltimore and London. 1-913.:282 ( listed as synonym of Panurgus aethiops Cresson, 1872).