Paradermamoeba spec., Huizen, the Netherlands
Genus Paradermamoeba Smirnov & Goodkov, 1993
Diagnosis: Locomotive form flattened and oblong to elongate, between about 50 to 100 µm in length. Distinct anterior hyaloplasm extending as flattened lateral extension towards posterior. Surface of cell without dorsal folds or wrinkles. Nucleus with prominent central nucleolus.
At the ultrastructural level, unique glycocalyx (513 nm thick) composed of closely packed glycostyles. Viewed longitudinally, glycocalyx appears as spiral springs; in transverse sections the tips are as hollow pentagonal structures.
Type species: Paradermamoeba valamo Smirnov & Goodkov, 1993
Ecology: Single species from freshwater and bottom sediments.
Paradermamoeba spec., c. 50 µm. All photomicrographs of the same cell, from Lolo Pass, Montana, USA
Paradermamoeba spec., from soil, near Hyères, France
Paradermamoeba spec., from a small fen near Kootwijk, Netherlands, c. 40 µm, nucleus 6.7 µm, with two nucleoli.
Dermamoeba spec., from soil, near Hyères, France; right: From Kootwijk, cell with two nucleoli
Paradermamoeba spec.