Megachile emarginata Say, 1824:352, Neotype ♀ (BBSL), designated by Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295. - As Anthidium emarginatum: - Schwarz, 1927Schwarz, H.F. 1927. Notes on some Anthidiine bees of Montana and California. American Museum Novitates 277:1-8. (distribution); Schwarz, 1927Schwarz, H.F. 1927. Additional North American bees of the genus Anthidium. American Museum Novitates 253:1-17. (distribution); Mayer et al., 2000Mayer, D.F., E.R. Miliczky, B.F. Finnigan & C.A. Johansen 2000. The bee fauna (Hymenoptera: Apoidea) of southeastern Washington. Journal of the Entomological Society of British Columbia 97:25-32. (distribution); Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425. (distribution).
Anthidium montivagum Cresson, 1878:110, Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295, Lectotype ♂ (ANSP). Synonymized with Anthidium emarginatum (Say, 1824) by Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295.
Anthidium astragali Swenk, 1914:16, 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.:16, Type ♂, Allotype ♀ (University of Nebraska State Museum); Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295, Holotype ♂ (UNSM). - Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295 ( listed as synonym of Anthidium emarginatum (Say, 1824)).
Anthidium rhodophorum Cockerell, 1925:623, Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295, Holotype ♀ (AMNH). - Gonzalez & Griswold, 2013Gonzalez, V.H. & T.L. Griswold 2013. Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168:221-425.:295 ( listed as synonym of Anthidium emarginatum (Say, 1824)).