Genus: Ovoid with caudal cilia; lorica flask-shape, ringed; cytostome with four rows of long cilia;
body surface with shorter cilia; macronucleus round (Kudo, 1966).
Large protruding vacuole absent (Carey, 1992).
Species:
Similar Genus -> > MetacystisVasicola sp.,
lorica 120 μm long, 19-25 μm wide, L/W=4.8-6.3,
x 400, x 640, Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Lorica 115 μm long, 19-23 μm wide, L/W=5.0-6.0, x 640
Images of collecting locality:
Yukawa-numa (pond), Nishiwaga-machi (town), Iwate Pref., Japan, July 28, 2007 by Y. Tsukii