Family: Ventral body kineties run from right ventral body surface to dorsal right and anterior left surfaces;
local region of thigmotactic cilia at rear of ventrum.
Genus: Spines on left margin of body (Illustrated Guide, 1985).
Images of collecting locality:
No.2, Kannon-numa Forest Park (pond), Shimogo town, Fukushima Pref., Japan, November 15, 2008, by Y. Tsukii