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Descrição:

Monocercomonoides are small oval to pyriform oxymonad flagellates (5-15 µm) with four flagella separated in two pairs, one trailing flagellum. Anterior large nucleus capped with a pelta. The axostyle originates from a preaxostyle stretched between the two pairs of flagellar base, it traverses the cell and protrudes posteriorly. A thin fiber or funis follows the adhering zone of the recurrent flagellum. Phagocytoses wood particles and bacteria. Occurs as endocommensal in vertebrates and invertebrates gut such as rumen, caecum of rodents, gut of termites, larvae of xylophagous insects. This species (uniddentified) from the gut of the cockroach Paraspheria boleiriana from Brazil (interference contrast).