 
 
|  Genus: Species: Test small, brown or rarely colourless, oviform, compressed; trasverse section lenticular; 28-58 μm long, 19-50 μm wide, pseudostome 6-16 μm wide (Cash, 1915). | 
 31 μm
 31 μm
 63 μm
 63 μm
 94 μm; x 640
 94 μm; x 640
 
 
 
 
 
Images of collecting locality: 
No.4, Yokotashiro, Oze-ga-hara (Oze marsh), Katashina village, Gunma Pref., Japan, October 6, 2007 by Y. Tsukii
 
 
