Genus: Test more or less flask-shaped, with more or less neck (Illustrated Guide, 1985).
Species: Test 160-175 μm long, 65-75 μm wide;
(Cash, British Freshwater Rhizopoda and Heliozoa II, 1909).
Nebela americana Taránek,
test 137 μm long, 63 μm wide, L/W=2.2,
pseudostome 18 μm wide,
x 640, Furuike marsh, Togakushi highland, Shinano town, Nagano Pref., Japan, June 12, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Test 137 μm long, 68 μm wide, L/W=2.2,
pseudostome 18 ? μm wide, x 640