Genus: Test ovate, discoid in cross-section; pseudostome a terminal slit
(Illustrated Guide, 1985).
Species: Test 35-40 μm long, 20-25 μm wide
(Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Hyalosphenia minuta Cash,
test 43 μm long, 27 μm wide, L/W=1.6,
pseudostome 13 μm wide, P/W=,
x 640, Onnenai, Kushiro marsh, Kushiro city, Hokkaido, Japan, October 16, 2005 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Genus: Test ovate, discoid in cross-section; pseudostome a terminal slit
(Illustrated Guide, 1985).
31 μm
