Coelioxys 8-dentata Say, 1824:353, ♂. ♂, United States; Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, type probably destroyed. - Say, 1824Say, T. 1824. Order Hymenoptera. In: Keating, W. H. (Ed.). Narrative of an expedition to the source of St. Peter's river, lake Winnepeek, lake of the woods, performed in the year 1823. Vol. II. 310-356. (distribution); Cresson, 1872Cresson, E.T. 1872. Hymenoptera Texana. Transactions of the American Entomological Society 4:153-292. (distribution); Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356. (distribution); Brues, 1903Brues, C.T. 1903. Studies of Texan bees. Part 1. Entomological News 14:79-85. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557. (distribution). - As Coelioxys octodentata: - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1921Cockerell, T.D.A. 1921. Some parasitic Megachilid bees of the Western United States. American Museum Novitates 21:1-11. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557. (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); Pascarella et al., 1999Pascarella, J.B., Waddington, K.D. & Neal, P.R. 1999. The Bee Fauna (Hymenoptera: Apoidea) of Everglades National Park, Florida and adjacent areas: Distribution, Phenology, and Biogeography. Journal of the Kansas Entomological Society 72 (1):32-45. (distribution); Pascarella, 2006Pascarella, J.B. 2006. The bees of Florida. . (distribution); Owens et al., 2018Owens, B.E., L. Allain, E.C. van Gorder, J.L. Bossart & C.E. Carlton 2018. The bees (Hymenoptera: Apoidea) of Louisiana: An updated, annotated checklist. Proceedings of the Entomological Society of Washington 120 (2):272-307. (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). - As Coelioxys octodentatus: - Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution).
Coelioxys brevis Cresson, 1864:402, ♂♀. 5 ♂♂, ♀♀, Conn., N.J., Penn., Md. (Ent. Soc. Phila. & Mr. E. Norton); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, Type ♀ (Academy of Natural Sciences of Philadelphia, #2490). - Cresson, 1864Cresson, E.T. 1864. On the North American species of several genera of Apidae. Proceedings of the Entomological Society of Philadelphia 2:373-411. (distribution); Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356.:345 ( listed as synonym of Coelioxys 8-dentata Say, 1824); Lovell & Cockerell, 1907Lovell, J.H. & Cockerell, T.D.A. 1907. The Megachilidae of southern Maine. Psyche 14 (1):15-21.:20 ( listed as synonym of Coelioxys octodentata Say, 1824); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:216 ( listed as synonym of Coelioxys octodentata Say, 1824); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692 ( listed as synonym of Coelioxys octodentata Say, 1824); 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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys altilis Cresson, 1879:219, no descr Replacement name for Coelioxys brevis Cresson, 1864 by Cresson, 1879Cresson, E.T. 1879. Descriptions of new North American Hymenoptera in the collection of the American Entomological Society. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 7:255-256.:219 (nec. Eversm.). - Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356.:345 ( listed as synonym of Coelioxys 8-dentata Say, 1824); Cockerell, 1921Cockerell, T.D.A. 1921. Some parasitic Megachilid bees of the Western United States. American Museum Novitates 21:1-11.:2 ( listed as synonym of Coelioxys octodentata Lepeletier, 1841); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:216 ( listed as synonym of Coelioxys octodentata Say, 1824); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692 ( listed as synonym of Coelioxys octodentata Say, 1824); 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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys cressonii Dalla Torre, 1896:485, no descr. Replacement name for Coelioxys brevis Cresson, 1864 by Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643.:485. - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356.:345 ( listed as synonym of Coelioxys 8-dentata Say, 1824). - As Coelioxys cressoni: - Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:216 ( listed as synonym of Coelioxys octodentata Say, 1824); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys coquilletti Crawford, 1914:157, Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, Type ♀ (National Museum of History). Synonymized with Coelioxys octodentata Say, 1824 by Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692. - Cockerell, 1925Cockerell, T.D.A. 1925. Bees of the genus Coelioxys in the collection of the California Academy of Sciences. The Pan-Pacific Entomologist 1 (4):145-151. (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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys megatricha Cockerell, 1916:60, ♂. Type ♂, Claremont, California (leg. Baker); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, Type ♂ (American Museum of Natural History). Synonymized with Coelioxys octodentata Say, 1824 by Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692. - Cockerell, 1925Cockerell, T.D.A. 1925. Bees of the genus Coelioxys in the collection of the California Academy of Sciences. The Pan-Pacific Entomologist 1 (4):145-151. (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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys crassula Cockerell, 1919:27, ♀. ♀, Boulder, Colorado, Oct. 10, 1918 (leg. W.P. Cockerell); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, Type ♀ (American Museum of Natural History). Synonymized with Coelioxys octodentata Say, 1824 by Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692. - 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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys mediata Cockerell, 1925:146, ♂♀. Holotype ♀, Millbrae, California, September 1, 1912 (Mus. Calif. Acad. Sci., No. 1634, leg. Dr. E.C. Van Dyke); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, Type ♀ (California Academy of Sciences, #1634). Synonymized with Coelioxys octodentata Say, 1824 by Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692. - 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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys catalinica Cockerell, 1940:136 - 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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824).
Coelioxys atlantica Mitchell, 1962:198, ♂♀. Allotype ♂, Sagamore, Mass. (M.C.Z., leg. J. Bequaert); Holotype ♀, Wake Co., N. C., June 22, 1957 (Mitchell, leg. Mitchell); Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692, Type (collection of T.B. Mitchell). Synonymized with Coelioxys octodentata Say, 1824 by Baker, 1975Baker, J.R. 1975. Taxonomy of five nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50 (12):649-730.:692. - Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557. (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.:2078 ( listed as synonym of Coelioxys octodentata Say, 1824); Pascarella, 2006Pascarella, J.B. 2006. The bees of Florida. . ( listed as synonym of Coelioxys octodentata Lepeletier, 1841).