Genus (Claparède and Lachmann, 1858):
Ovoid or cylindrical; apical cytopharynx; posterior bald; caudal cilia present;
contractile vacuole posterior (Carey, 1992).
Species: |
U. farcta (Stokes, 1886) Kahl, 1930: Small; 20 μm long; pyriform or pyramidal in shape; posterior without ciliation except for a singlecaudal cilium; cytostome small; macronucleus spherical, centrally placed (Carey, 1992). --> U. farcta ?? (Kudo, 1966).