Genus (Claparède and Lachmann, 1858):
Ovoid or cylindrical; apical cytopharynx; posterior bald; caudal cilia present;
contractile vacuole posterior (Carey, 1992).
Species:
Urotricha sp.,
cell body 45 μm long, 30 μm wide, L/W=1.5,
cilia 7 μm long,
x 640, Iroha-numa (marsh), Zao mountain, Yamagata city, Yamagata Pref., Japan, July 9, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640