nominal species Sphaerium mamillanum ‘Westerlund’ of Authors

Sphaerium mamillanum ‘Westerlund’ of Authors = Sphaerium mamillanum

‘Westerlund’ of Authors.
Starobogatov et al., 2004. Key Freshw. Invert. Russia 6 (molluscs, polychaetes, nemerteans): 70.
Kantor et al., 2010. Cat. Contin. Moll. Russia: 294.
Bogan, 2010. FADA: [web].
Vinarski & Kantor, 2016. Analyt. Cat. Fr. Brack. Moll. Russia: 88.
(error for Sphaerium corneum var. ζ mammillanum Westerlund, 1871)