According to Starobogatov et al. (2004) it is a valid species. However, all other authors have accepted P. ... [details]
Starobogatov et al. (2004) consider it a valid species but this opinion have not gained a common acceptance [details]
Some authors (see, for example, Starobogatov et al. 2004) consider this a separate species of the genus Valvata. ... [details]
Anistratenko & Anistratenko (2001) accept this species as a valid species of the genus Cincinna [details]