Euglypha brachiata Charles Krebs
This beautiful image was made by Charles Krebs. It's really amazing how he could make this micrograph with an "ordinary" light microscope. (Photo published with his permission).

 

 

Euglypha brachiata  Leidy 1879

 

Diagnosis: Test elongate, slightly constricted near the center, in cross-section round; fundus somewhat acute; pseudostome terminal bordered by a double row of 6-7 dentate scales; neck ornamented with 2-7 long recurved spines, arising from scales situated among the 3 rows adjoining the aperture; spines sometimes ribbon-shaped; body scales circular or sub-circular; nucleus large, placed posteriorly; cytoplasm and filopodia normal.

 

Dimensions: Leidy (1879): 104-128 µm long, Wailes (1915): 92-120 µm long, 30-37 µm wide, aperture 12-15 µm wide, spines 60-65 µm; my measurements 138 µm long.

 

Ecology: submerged sphagnum, sediments.

 

Remarks: This species has been confused with E. acanthophora by Penard (1902) and others. However, I own an original slide, mounted by Penard, with the label Euglypha brachiata Leidy non Penard (see below):

 

Euglypha brachiata
Euglypha brachiata
This shell is present in the Penard-mount above. It was collected in Lakehurst, New Jersey, by Wailes.
Euglypha brachiata
Euglypha brachiata, 138 µm, British Columbia, sample: Thierry Heger.