Genus Flabellula Schaeffer, 1926 emend. Smirnov et al., 2016
Diagnosis: Amoebae in locomotion flattened, flabellate, with prominent anterior hyaloplasm irregularly triangular or fan-shaped. Limax form adopted only under unfavourable conditions. Uninucleate or possessing few nuclei. Ultrastructure: In the SSU rDNA sequence remarkable insertion of ca. 35 nucleotides starting from the position 260 and deletion of ca. 15 nucleotides starting from the position 776 (in the sequence EU852652 Flabellula baltica strain SMA17/I) (against sequences of Leptomyxa spp. and Rhizamoeba spp.).
Type species: Flabellula citata Schaeffer, 1926
Ecology: Known species from marine habitats. I found several species in freshwater.
F. citata Schaeffer, 1926
F. calkinsi (Hogue, 1914) Bovee, 1965
F. pellucida Schaeffer, 1926
F. demetica Page, 1980
F. trinovantica Page, 1980
F. baltica Smirnov, 1999
F. kudoi (Singh et Hanumaiah, 1979) Smirnov, 2016
F. reniformis (Schmoller, 1964) Smirnov, 2016
F. hoguae Sawyer, 1975
F. pomeranica Kudryavtsev, 2016