Phylum Sarcodaria Milne-Edwards,1850
Superclass Rhizopoda Dujardin, 1835
Class Lobosa Carpenter, 1861
Subclass Testacealobosa de Saedeleer, 1934
Order Thecolobosa Haeckel, 1878 (=Arcellinida auctorum)
Superfamily Arcellacea Ehrenberg, 1830
Family Difflugidae Stein, 1859
Genus Cucurbitella (Carter, 1856)
Cucurbitella tricuspis (Carter) Medioli et al., 1987
Genus Difflugia Leclerc in Lamarck, 1816
Difflugia amphora Wallich, 1864
Difflugia bacillariarum Perty, 1849
Difflugia bidens Penard, 1902
Difflugia corona Wallich, 1864
Difflugia fragosa Hampel, 1898
Difflugia globulus (Ehrenberg, 1848)
Difflugia oblonga Ehrenberg, 1832
Difflugia protaeiformis Lamarck, 1816
Difflugia urceolata Carter, 1864
Genus Lagenodifflugia (Leidy, 1874)
Lagenodifflugia vas (Leidy, 1874)
Genus Lesquereusia (Schlumberger, 1845)
Lesquereusia spiralis (Ehrenberg, 1840)
Genus Pontigulasia Rhumbler, 1895
Pontigulasia compressa (Carter, 1864)
Family Centropyxididae Deflandre, 1953
Genus Centropyxis Stein, 1859
Centropyxis aculeata (Ehrenberg, 1832)
Centropyxis constricta (Ehrenberg, 1843)
Family Arcellidae Ehrenberg, 1830
Genus Arcella Ehrenberg, 1830
Arcella vulgaris Ehrenberg, 1930
Family Hyalospheniidae Schulze, 1877
Genus Heleopera Leidy, 1879
Heleopera sphagni (Leidy, 1874)