Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome relatively large,
with or lacking a collar (Illustrated Guide, 1985).
Difflugia claviformis Ehrenberg,
test 250 μm long (excluding spiny projection), 105 μm wide, pseudostome 52 μm wide,
spiny projection 35 μm long,
x 400, x 640, Suijo Park, Gyoda city, Saitama Pref., Japan, March 11, 2006 by Y. Tsukii
150 μm; x 400
Images of collecting locality:
Suijo Park, Gyoda city, Saitama Pref., Japan, March 11, 2006 by Y. Tsukii
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