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 60-63 μm long, 57-60 μm wide,
x 640, rice field, Myoyo (Myouyou), Fukiage town, Saitama Pref., Japan, October 17, 2004 by Y. Tsukii
94 μm; x 640