Trimastix
Similar genera
Jakobids:
biflagellate, aerobes with mitochondria, single vane on posterior
flagellum
Malawimonas (freshwater,
discoidal mitochondrial cristae)
Jakoba (marine,
irregularly flattened or tubular mitochondrial cristae)
Histiona (freshwater, lorica
without spine scales present, posterior "sail" formed by right ventral
cytoplasmic vane, tubular mitochondrial cristae)
Reclinomonas (lorica with spine
scales, tubular mitochondrial cristae)
Retortamonads:
cytostome/cytopharynx present, central nucleolus absent, Golgi and
endoplasmic reticulum not visible with standard methods
Retortamonas (biflagellate)
Chilomastix
(quadriflagellate)
Heteroloboseans (sometimes also called Percolozoa):
mitochondria with discoidal cristae or large hydrogenosomes; no vanes on
flagella; Golgi not visible with standard methods. Many species alternate
between flagellate and amoeboid stages. Genera with quadriflagellate
flagellate stages include Percolomonas and Tetramitus. Naegleria, whose species alternate between amoebae and biflagellate zoospores, is a member of this group.
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