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 135 μm long, 55 μm wide, pseudostome 20 μm wide,
x 640, Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640