Nebela collaris (Ehrenberg, 1848) sensu Kosakyan & Gomaa, 2013

Diagnosis: The shell is large, pyriform, slightly yellowish or brownish, laterally compressed with small lateral pores (number of pores can vary), which can be difficult to observe. The shell can be composed mainly oval or circular test plates or can be composed only of organic cement. The neck is very short or almost absent, with aperture, which can be linear, slightly or strongly curved, surrounded by an organic collar.

Dimensions: Length mainly 109—112 µm; extremes reported 95—115 µm, width 74—81 µm; L/B ratio 1.4; aperture 28—32 µm wide.

Habitat: in Sphagnum swamps, mosses, aquatic vegetation in peaty bogs.

Remarks: The formation of the shell of N. collaris has been described by MacKinley (1936) who noted that in the absence of other smaller testate amoebae as a source of food, the shell wall consisted of a membrane devoid of shell plates.