Litonotus varsaviensis (Wrześniowski, 1866) Wrześniowski, 1870

Amphileptus bivacuolata — Tirjaková 1993: 133.

Hemiophrys bivacuolata — Matis 1988: 57; Tirjaková & Matis 1987: 8.

Litonotus varsaviensis — Tirjaková 1997b: 27; Andelová & Tirjaková 2000: 35; Chrenková & Tirjaková 2000: 47; Tirjaková 2001: 16; Tirjaková 2003a: 37; Tirjaková 2003b: 20; Tirjaková 2004: 7; Krno et al. 2006: 308; Tirjaková & Vďačný 2013a: 671; Tirjaková & Vďačný 2013b: 529.

Main morphological characters (according to Foissner et al. 1995). Size 80–150 × 35–55 µm in vivo. Body drop-like to lanceolate, with usually broadly rounded posterior end. Usually two macronuclear nodules with a single micronucleus in between. At least two (3–5) ventral contractile vacuoles: one subterminal and other one in about mid-body. Extrusomes broadly fusiform, about 4–6 µm long, attached to anterior half of oral bulge and scattered in cytoplasm. Somatic ciliary pattern Litonotus -like; 6–11 right and 4–9 left kineties.

Distribution. Litonotus varsaviensis was recorded in submerged mosses from Slovenský Raj at a frequency of 1.88 (Tirjaková & Matis 1987); in organic mud from activated sludge plants in the town of Bratislava (Matis 1988); in the periphyton and benthos of the Turiec River (Tirjaková 1993); in an oligotrophic stream in the National Nature Reserve Rozsutec, Malá Fatra Mts (Tirjaková 1997b); in soil under mosses and in mosses from the town of Bratislava (Andelová & Tirjaková 2000, Chrenková & Tirjaková 2000); in the benthos from the Gidra River (Tirjaková 2003a); in the benthos from the Stupavský potok brook (Tirjaková 2003b); in mosses from the fluviatile tract of the Hincov potok stream, High Tatra Mts (Krno et al. 2006; Tirjaková 2001, 2004); in the sediment from the littoral zone of the upper Váh River (Tirjaková & Vďačný 2013a); in the sediment from the Zubrovica stream, Low Tatra Mts (Tirjaková & Vďačný 2013b).