Vexillifera multispinosa Dykova et al, 2012
Diagnosis: variable in shape, with numerous (up to 15), sharp pointed hyaline subpseudopodia of different length (up to 15 µm). Actively moving trophozoites always longer than broad. Granuloplasm with clearly visible refractile crystalline inclusions, nucleus of variable shape and contractile vacuole surrounded by small vesicles resembling narrow spongiom. Rim of hyaloplasm that gives rise to subpseudopodia relatively narrow. Outer layer of cell surface with regularly arranged T-shaped 20 nm long glycostyles; subpseudopodia with microfilamentous core. Nuclear membrane disappearing during nuclear division.
Dimensions: Length excluding subpseudopodia 10-20 µm.
Ecology: From gills of the banded leporinus Leporinus fasciatus (Bloch, 1784) caught in the Amazon River (Peru, Iquitos)