Tritrichomonads are small trichomonads (8-22 Âµm) with three anterior flagella and a recurrent flagellum forming a conspicuous undulating membrane with a posterior free portion. Costa stout or slender sustaining the undulating membrane; axostyle well developed; sausage-shaped parabasal. At the time of writing, there are about 20 species living in the intestinal tract of rodents, birds, reptiles and amphibians one species T. foetus is a parasite of the uro-genital tract of bovines. This image of Tritrichomonas foetus parasitic from uro-genital tract of the cattle (cows). It has three anterior flagella, a recurrent flagellum forming an undulating membrane with a free posterior part, a thick axostyle (immunofluorescence).