“…So far O. smreczynskii is considered native in Moldova, Romania, and Ukraine; and it has been unintentionally introduced to Belarus, Czech Republic, Denmark, Estonia, Germany, Hungary, Latvia, Lithuania, Poland, the Netherlands, Norway, the Russian Federation, Sweden, and Switzerland (Dieckmann 1980;Sprick 1989;Yunakov 2003;Anderson 2009;Fägerström et al 2010;Balalaikins, Bukejs, 2011;Yunakov et al 2012;Gederaas et al 2012;Dedyukhin 2014;Podlussány et al 2014;Heijerman, Burgers 2015;Benedikt et al 2016;Sautkin, Meleshko 2016;Benedikt et al 2017).…”