Family Acramoebidae Smirnov, Nassonova et Cavalier-Smith, 2008
Diagnosis: Highly branched, flattened naked amoeboid organisms, with very slender, pointed, sometimes branched hyaline subpseudopodia never forming a network, lacking granules; lacking cilia or flagella.
Type genus Acramoeba
Genus Acramoeba Smirnov, Nassonova et Cavalier-Smith, 2008
With diagnosis of the family.
Type species: Acramoeba dendroida
Arcella marginata, after Deflandre, 1929 Arcella marginata Daday, 1905 Diagnosis: Shell roughly hemispherical, rather overhanging, with a flattened, smooth edge. In dorsal view showing a
Arcella lobostoma, after Deflandre, 1929 Arcella lobostoma Deflandre, 1929 Diagnosis: Shell hemispherical. In ventral view, irregular circular outline, often a little elliptical; pseudostome irregularly lobed:
Pelomyxa palustris Pelomyxa palustris, found below decaying leaves in the hollow of a beech Pelomyxa palustris, found below decaying leaves in the hollow of a
H. galeata – from Stepanek, 1963 Hoogenraadia galeata (Stepanek, 1963) n. comb. Gillardella galeata Stepanek, 1963 Diagnosis: Shell somewhat similar to the shell of Corythion dubium
Arcella grospietschi, after Stepanek, 1963 Arcella grospietschi Stepanek, 1963 Diagnosis: Shell disc-shaped, yellow-brown, in ventral view with a undulated border, with seven large and seven smaller
Arcella oyei, after Stepanek, 1963 Arcella oyei Stepanek, 1963 Diagnosis: In dorsal view, the shell is circular, with 10 apparent broken lobes on the surface. In