Euglypha filifera Penard, 1890
Diagnosis: shell elongate oviform, slightly compressed, lateral margins and fundus with a few long spines, usually 6-10 in number, attached to the shell by small hemispherical nodules; aperture circular, bordered by usually eight finely dentated scales; body scales oval; nucleus large, with several nucleoli.
Dimensions: 55-70 µm
Ecology: Sphagnum and waterplants
Remarks: the spines can be solitary or arranged in tufts of 3 or 4.