Genus: Test variable, chitinoid; binucleate (Illustrated Guide, 1985). Species: Test 100-145 μm high, 100-152 μm in diam. (Cash, The British Freshwater Rhizopoda and Heliozoa vol. I, 1905).

31 μm 63 μm 94 μm; x 640

Images of collecting locality: No.2, Hanadate South wetland, Chokai mountain, Yuri-Honjo city, Akita Pref., Japan, September 29, 2008 by Y. Tsukii