Raphidiophrys coerulea

Raphidiophrys coerulea Penard, 1904

Diagnosis: scales broad ovate, very fine, without distinct border, lightmicroscopically without any structure, in living cells resembling straigth lines, building a closed skeleton; some scales radially arranged at the base of the axopods. Several contractile vacuoles; axopodia very fine with hard to observe granules.

Dimensions: scale size 3 -2 µm; skeleton 8-18 µm.

Ecology: in detritus and between algae. Springtime and summer. Rare. Recorded from Switzerland (Penard 1904), Germany (Rainer 1968) and The Netherlands (Siemensma 1981).

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