Genus: Test more or less flask-shaped, with more or less neck (Illustrated Guide, 1985). Species: Test 50-70 μm long, 25-35 μm wide; (Cash, British Freshwater Rhizopoda and Heliozoa II, 1909).

31 μm 63 μm 94 μm; x 640

Images of collecting locality: Images of collecting locality: No.3, Kami-Kenashitai (marsh), Hakkoda mountain, Aomori city, Aomori Pref., Japan, September 13, 2006 by Y. Tsukii