Genus: Test more or less flask-shaped, with more or less neck (Illustrated Guide, 1985).
Species: Test 120-125 μm long, 65-70 μm wide; (Cash, British Freshwater Rhizopoda and Heliozoa II, 1909).
->> Description at WPRNO Google Image Search
Similar species -->> N. americana; N. barbata;
Group: Lagenoides: Test with a long neck
N. lageniformis
143,150 x μm
L/W=1.9,2.1
Hakkoda Gourd line
Hakkoda mountain
Aomori, 2005
N. lageniformis
130 x 68 μm
L/W=1.9
Kenashitai
Hakkoda mountain
Aomori, 2005
N. lageniformis
150 x 76 μm
L/W=
Shimo-Kenashitai 5
Hakkoda mountain
Aomori, 2006
N. lageniformis
μm
L/W=
Ohyachi 3
Hachimantai
Akita, 2007