original description
(of Pisidium milium f. pseudosphaerium Ehrmann, 1933) Favre, J. (1927). Les mollusques post-glaciaires et actuels du bassin de Genève. Mémoires de la Société de Physique et d'Histoire Naturelle de Genève, 40 (3): 171-434, pl. 14-27. Genève [October].
page(s): 305, 306 [details]
additional source
Favre, J. (1927). Les mollusques post-glaciaires et actuels du bassin de Genève. Mémoires de la Société de Physique et d'Histoire Naturelle de Genève, 40 (3): 171-434, pl. 14-27. Genève [October].
page(s): 298 [details]
From editor or global species database
Authority Favre (1927) has usually been considered the author of this taxon. Welter-Schultes [2012] grants the authorship of this name to Ehrmann [1933], whereas Piechocki [1989] to Schlesch, 1947. According to Welter-Schultes, "The style of the work suggests that Favre regarded the term pseudo-sphaerium not as a name for separate taxa, but to describe a certain Sphaerium-like form of shells". [details]