Description published
Lepeletier, Histoire Naturelle des Insectes, Hyménoptères, vol. 2, p. 317
Location of type
Type material: Holotype f, “Bois du Vésinet, près Saint-Germain-en-Laye” [France], MNHN (Paris). Type species of Aceratosmia Schmiedeknecht.-Combination Osmia (Aceratosmia) emarginata Lepeletier in Schmiedeknecht (1885: 19 [885]). Combination Osmia (Pachyosmia) emarginata Lepeletier in Friese (1911b: 125).