Similar genera

Bicosoeca (two flagella, one of which attaches the cell to the lorica; no tentacle collar; asymmetrical microtubular roots present; tubular mitochondrial cristae); Pteridomonas, Ciliophrys (no lorica, cells attached to substrate via cytoplasmic stalk; tentacles irregularly radiate, not in a collar; tripartite tubular hairs present on flagellum; tubular mitochondrial cristae).

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