Genus: Pseudostome lacks lobed collar; test round or oval in cross-section;
with or lacking a collar (Illustrated Guide, 1985).
Species: |
Difflugia sp.,
test μm long, μm wide,
x 100, x 200, x 400, Japan, 199? by Y. Tsukii
Difflugia sp. ?,
test μm long, μm wide,
x 400, x 640, Matsumoto, Nagano Pref., Japan, May 2001, collected by N. Kinoshita, photo by Y. Tsukii