Mastigamoeba cf. longifilum, 100 µm long – Den Treek, Amersfoort
Mastigamoeba longifilum Stokes
Diagnosis: Body elongate, transparent, very changeable in shape, with few, short, indeterminate pseudopods; cilium active, long, twice body length; contractile vacuole anterior; nucleus anterior, small.
Dimensions: Body 12-28 µm long when extended, contracted about 10 µm.
Ecology: standing water among decaying vegetation.
Mastigamoeba cf. longifilum