Genus: A flattened ovoid or oblong, with longitudinal surface folds and
appearance of thickened 'pellicle'; hyaloplasm a crescent at anterior end with
thin extensions toward posterior end along sides; uninucleate (Page, 1976).
cell body 82 μm long, 75 μm wide,
x 640, rice field, Senuki, Takaku-kou, Nasu town, Tochigi Pref., Japan, October 31, 2004 by Y. Tsukii
94 μm; x 640