Description published
Pérez, Actes de la Société Linnéenne de Bordeaux, 33: 182.
Location of type
Type material: Lectotype f, by designation of Tkalcu (1975c: 311), “Hautes et Basses-Pyrénées” [France], MNHN (Paris).- Combination Osmia (Chalcosmia) labialis Pérez in Tkalcu (1975c: 311).-Synonymy with Osmia leaiana (Kirby) in Benoist (1931: 29), rejected by Tkalcu (1975c: 311). Synonymy with Osmia melanogaster Spinola in Warncke (1986: 74) and in Schwarz et al. (1996: 124), rejected by Rasmont et al. (1995: 51).