Genus: With vase-like lorica; body small, ovoid with rudimentary collar, a flagellum extending
through it; protoplasmic body anchored to base by a contractile filament (Kudo, 1966).
Subgenus: sessile, colonial.
Bicosoeca sp.? or related species ? (Coanoflagellate ?),
cell body μm long, μm wide,
x 640, O-ike (pond), O-ike park, Yabuki town, Fukushima Pref., Japan, August 2003, by Y. Tsukii
94 μm; x 640