Genus: Test variable, chitinoid; binucleate (Illustrated Guide, 1985).
Group: Discoides (Test flattened; height < 1/2 greatest diam.) Species: |
Images of collecting locality:
No.10 (Suimei-no-hotori), Kannon-numa Forest Park (pond), Shimogo town, Fukushima Pref., Japan, November 15, 2008, by Y. Tsukii