Pseudodifflugia archeri
P. archeri, after Penard, 1904

Pseudodifflugia archeri Penard, 1899

Diagnosis: shell chitinoid, grey brownish, broad elliptical, usually not compressed, covered with small mineral particles; aperture circular; plasmabody hardly visible through the thick covering of the shell, not completely filling the shell; cytoplasm and nucleus normal; filopodia numerous, long and straight, branching, but not anastomosing.

Dimensions: literature 50-170 µm, seldom longer. My measurements: 52-60 µm.

Ecology: Sphagnum, waterplants and detritus of lakes and ditches.

Remarks: At first glance this species can easily be confused with Diaphoropodon mobile. The main difference is the lack of the so called radiating rods in Diaphoropodon.

Pseudodifflugia archeri
Pseudodifflugia archeri, 60 µm
Pseudodifflugia archeri
Pseudodifflugia archeri, with circular aperture
Pseudodifflugia archeri
Pseudodifflugia archeri, filopodia
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