Pseudodifflugia microstoma, 34 µm
Pseudodifflugia microstoma Playfair, 1917
Diagnosis: Shell chitinoid, ovoid or broad elliptical, not compressed, with rounded fundus, sides gently arched, converging rapidly down to a very small, indefinite aperture, not specially margined.
Dimensions: Length 30-31 µm, breadth 17-23 µm, aperture 4 µm; my measurements: c. 34 µm long, aperture 4.6 µm (n=1).
Ecology: Freshwater lake, Spiegelplas.
Remarks:
Original drawing, Playfair, 1917
Filopodia
Curious filopodial pattern