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Description of HeteromitaCercomonads, biflagellated cells, subapical anterior insertion of flagella. In normal form of locomotion, gliding, the posterior flagellum trails behind the cells. The anterior flagellum beats stiffly, and is often directed posteriorly. Cells are phagotrophic, ingesting bacteria using pseudopodia mostly from the front end. Heteromita is distinguished from Cercomonas because pseudopodial formation in Heteromita is mostly anterior, and the body of Cercomonas is more plastic, and in Cercomonas the recurrent flagellum adheres to the body surface. Type species not specified.