Genus Nebela (Leidy, 1874) sensu Kosakyan et al., 2016
Diagnosis: Test rounded, ovoid-pyriform, or wide-pyriform, rarely with a keel (partial or complete) or other lateral expansions, with or without wavy lateral margins. Pseudostome ranging from linear to strongly curved, bordered by a ± thin organic lip (rim, collar or fringe). Test hyaline or slightly yellowish, reinforced with circular to elongated shell plates apparently recycled mostly from euglyphid testate amoeba prey, sometimes also including fragments of diatom frustules or other small mineral elements.
Type species: Nebela collaris (Ehrenberg 1848) Leidy, 1879.
Included taxa: Nebela collaris, N. tincta, N. guttata, N. gimlii, N. pechorensis, N. aliciae, N. flabellulum and all the closely related species sharing the same characters (i.e. N. acolla, N. carinatella, N. dydevallei, N. rotunda and N. pulchra).