Genus: Flask-shaped; elongate, flattened; anterior region neck-like; cilia only on right side;
without trichocyst-borders; cytostome with trichocysts; two macronuclei (Kudo, 1966).
Litonotus sp. ,
μm long, two macronuclei,
a contractile vacuole posterior, rear pointed,
x 400, Japan, 199? by Y. Tsukii
50 μm 100 μm 150 μm; x 400
Litonotus dusarti Dragesco, 1960: Similar in form to L. anguilla, but the mid-body region is enlarged; 135-200 μm long; a neck and oral region lined with trichocysts; a pointed tail; a single contractile vacuole; two macronuclei with an intercalated micronuleus (Carey, 1992).
Litonotus anguilla (Kahl, 1930): Elongate with a long curving neck region and pointed tail; 150-160 μm long; longitudila kineties stretch from pole to pole; single contractile vacuole; a macronucleus consisting of two parts with an intercalated micronuleus (Carey, 1992).