Drawing

Description:

Quasibodo laughtoni Bernard et al., 2000. Cells are ovoid, bean-shaped or pyriform, circular in cross-section and 6-12 microns long. The flagella insert subapically, with the cell anterior to the flagellar insertion forming a very short protrusion. The anterior flagellum is about the body length, and often holds its distal part in a curve. The posterior flagellum is acronematic (not always visible), three to six times the length of the cell, and forms an obtuse angle with the anterior flagellum. Its anterior portion is adpressed to the cell. The cytoplasm is very hyaline, sometimes with small vacuoles. Cytoplasmic strands form occasionally from the posterior end. The nucleus located in the anterior half of the cell is difficult to see. Cells may rotate during swimming, the posterior flagellum appears to provide the motive force.