Genus: Ovoid or cylindrical in shape; anterior rounded or drawn out into an elongate snout;
cytostome apical; dorsal brush present, formed by paired kinetosomes (Carey, 1992).
Oral region truncated with flat membranous region forward of oral dikinetids
(Illustrated Guide, 1985).
Images of collecting locality:
No.3, standing water, Nakayukawa-sen (a forestry road along Omatazawa), Nishiwaga town, Iwate Pref., Japan, May 4, 2007 by Y. Tsukii