Genus: Test circular, ovoid or discoid; pseudostome eccentric, circular or ovoidal;
with or without spines (Kudo, 1966).
Species:
Test 120-150 x 75-100 μm,
60-75 μm in hight,
pouch-shaped in oral view, round in lateral, tapered toward anterior;
pseudostome 25-30 μm with incurved lips;
several similar species (Illustrated Guide, 1985).
Difflugia constricta (Ehrenberg) ?,
test 140 μm long, 80 μm wide, L/W=,
pseudostome 40 μm long, 47 μm wide, L/W=,
x 640, No. 1, Omotsubo marsh (omotubo marsh, Suzuran-no-sono), Tetta-cho, Niimi city (formerly Tetta cho), Okayama Pref., Japan, September 23, 2006 by Y. Tsukii
50 μm
100 μm
150 μm; x 400
Images of collecting locality:
No.1, Omotsubo marsh (omotubo marsh, Suzuran-no-sono), Tetta-cho, Niimi city (formerly Tetta cho), Okayama Pref., Japan, September 23, 2006 by Y. Tsukii