Genus: Test ovate, discoid in cross-section; pseudostome a terminal slit
(Illustrated Guide, 1985).
Species: Test flask-shaped, μm long, μm wide
(Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Hyalosphenia elegans Leidy,
test 109 μm long, 56 μm wide, L/W=, pseudostome 18 μm wide,
x 640, No.1, Shirakaba-Yachi, Komado marsh (No.6), Showa village and Tajima town, Fukushima Pref., Japan, May 21, 2007, by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
Images of collecting locality:
No.1, Shirakaba-Yachi, Komado marsh (No.6), Showa village and Tajima town, Fukushima Pref., Japan, May 21, 2007, by Y. Tsukii