S. macrolepis, from Ecuador (l.) and from Chatelain et al, 2013 (r.)
Sphenoderia macrolepis Leidy, 1879
Diagnosis: Shell small, oviform, with a pair of large plates on each side and a number of other smaller plates; the large plates are elliptic and transversely disposed; aperture linear, neck conical in side view.
Dimensions: Length 27-45 µm.
Habitat: in Sphagnum. Not common.
Sphenoderia macrolepis from Hoogenraad, 1940