Euglypha penardi Meisterfeld, 1979
Diagnosis: Large shell, in cross-section broad oval, pseudostome also broad oval; spines of different length cover the whole surface of the rear part of the shell. Spines usually not paired but solitary and anchored with a thick drop of kit. The yellowish to yellowish-brow color is probably caused by the large amount of cement. REM photographs show the significant bulging of the cement between the oval plate scales. The 10-14 oval marginal aperture plates overlap each other for about one-third. At the front end of each scale are 9, rarely 7, points, and on the underside one oblique front-facing tooth. The size of the points as well as the number of teeth decreases to both sides of the plates. The plasma displays no special features. Euglypha penardi differs from E. ciliata by its larger dimensions and the higher number of point and teeth of the apertural plates. It differs from E. compressa in the spines which cover the whole rear of the shell, the larger number of teeth in the apertural scales, the color and the rounded lateral edges in contrast to the convex cross-section of E. compressa.
Dimensions: L 100-120 µm, B 7-88 µm (Meisterfeld)
Ecology: Sphagnum, USA (Penard as E. ciliata large variation), the Netherlands
Remarks: I made this photomicrographs in 2010 when I was testing a camera and made a quick preparation, without knowing which species is was.