Genus:
Species: Test 130-150 μm long, 100 μm wide
(Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Similar Genus -->> Difflugia Pontigulasia compressa (Carter) Cash ?,
test 254 μm long, 226 μm wide, L/W=1.1, pseudostome 74 μm wide,
x 200, x 400, x 640, Nidanuma (Nitanuma), Tsuchiyu-onsen, Fukushima city, Fukushima Pref., Japan, October 28, 2005 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640