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Hexamastix are small (10-30 µm) trichomonad flagellates with five grouped anteriorly directed flagella and a recurrent non-adhering flagellum. Axostyle well developed and parabasal V-shaped. Among the 11 species described, several live in Invertebrates such as H. claviger in termites (Kirby, 1930) and in vertebrates such as H. caviae in rodents (Nie, 1950). Hexamastix claviger from Kalotermes flavicollis (phase contrast). Hexamastix caviae from Arvicola terrestris (phase contrast).
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This is an illustration of the assumed life cycle of Dientamoeba fragilis, the cause of a protozoan parasitic infection.Created: 2002
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Monocercomonas are small trichomonad flagellates (5-15 µm) with three anteriorly directed flagella and a recurrent one slightly adhering on its proximal part to the cell body. Well developed axostyle protruding posterioly. Parabasal body rod-, disc- or V-shaped. About 20 species occurring in the intestinal tract of vertebrates such as M. caviae from the caecum of guinea pigs (Nie 1950) or invertebrates such as termites, roaches, tipulid larvae. Unidentified species from the gut of the cockroach Parasphaeria boleiriana from Brazil (interference contrast)
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Hexamastix are small (10-30 µm) trichomonad flagellates with five grouped anteriorly directed flagella and a recurrent non-adhering flagellum. Axostyle well developed and parabasal V-shaped. Among the 11 species described, several live in Invertebrates such as H. claviger in termites (Kirby, 1930) and in vertebrates such as H. caviae in rodents (Nie, 1950). Hexamastix claviger from Kalotermes flavicollis (phase contrast).
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Hexamastix termitis showing the five anterior flagella, the recurrent flagellum, the nucleus and the axostyle.
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Tricercomitus are very small parabasalid flagellates (3-6 µm) with 3 anterior flagella and a recurrent one very long and adhering for most of its length along the body. Tricercomitus divergens is from Kalotermes flavicollis. This scanning EM shows the three anterior flagella and the long adhering recurrent flagellum bearing down-like hairs.