Genus: Flask-shaped; elongate, flattened; anterior region neck-like; cilia only on right side; without trichocyst-borders; cytostome with trichocysts; two macronuclei (Kudo, 1966).
Species:

Single macronucleus ?
Litonotus sp. 50 μm 1 or 2 Mac. Japan, 1998	Litonotus sp. 34 μm 1 or 2 Mac. Japan, 1998 Movies	Litonotus sp. 25 x 8 μm Akasaka-numa Saitama, 2002

Similar Genus ->> Loxophyllum; Amphileptus

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