Euplotes moebiusi Kahl, 1932

(Figs 2 A–G; Table 3)

This species was described from salt water (Kahl 1932). Later it was recorded also from activated sludge and freshwaters where prefers polysaprobic or beta- to alfa-mesosaprobic levels (for review, see Foissner et al. 1991).

In Slovakia, E. moebiusi was found at several localities: in the River Danube near Sporná Sihoť (Matis & Tirjaková 1995; unpubl. observ.); in the Morava river (Baláži & Matis 1999, 2002; Baláži 2010); in streams of SE Slovakia during years 2011–2012 (unpubl. observ.); and in the sediments of the Váh river near the village of Lisková (Tirjaková & Vďačný 2013a).

Characteristics Species a Method b Mean M SD SE CV Min Max n c. .....continued on the next page

aEAE— Euplotoides aediculatus, EAF— Euplotopsis affinis, EMO— Euplotes moebiusi, EMU – Euplotopsis muscicola, EPA— Euplotoides patella, EWO— Euplotoides woodruffi .

bPI—protargol impregnation, SN—silver nitrate impregnation.

c Size values for those species in which n <10 should be taken with caution due to the considerable variation in body length and width in euplotids. Problematic values are marked by an asterisk.