Euplotes charon ( Müller, 1773 ) Ehrenberg, 1830

Tirjaková, Eva, Botlíková, Simona & Vďačný, Peter, 2015, Checklist and distribution of ciliates from the family Euplotidae Ehrenberg, 1838 (Protista: Ciliophora: Spirotrichea) in Slovakia, Central Europe, Zootaxa 3920 (2), pp. 343-365 : 350

Euplotes charon ( Müller, 1773) Ehrenberg, 1830

This species is considered to be marine ( Borror 1968; Curds 1975), but was recorded also in brackish water ( Dragesco & Dragesco-Kernéis 1986) and mouths of rivers (e.g., Kwon & Shin 2006). Thus, E. charon could be euryhaline. However, records from freshwaters were recognized as misidentifications of E. moebiusi (for review, see Foissner et al. 1991). As yet A. charon has been reported from Africa, America, Europe, and Asia ( Dragesco & Dragesco-Kernéis 1986; Song & Warren 2009). There are only older data on occurrence of E. charon from the territory of Slovakia. Specifically, Hanuška (1962, 1971) reported it from the Nitra and Bebrava rivers and Madlen (1946) from forest soils in Central and Nothern Slovakia (localities were not closer specified). Only Madlen’s (1946) record is accompanied by a drawing that, however, does not enable to support correctenes of his identification. Since any record of E. charon from the territory of Slovakia cannot be reliably verified, we consider them as misidentifications of E. moebiusi .