Genus:
Species: Test 130-150 μm long, 100 μm wide
(Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Similar Genus -->> Difflugia Pontigulasia sp. Rhumbler,
test 160 μm long, 120 μm wide, L/W=1.3,
pseudostome 45 μm wide,
x 400, x 640, Ushidome-ike (pond), Norikura highland, Azumi village, Nagano Pref., Japan, May 28, 2005 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640