Genus: Pseudostome lacks lobed collar; test round or oval in cross-section; pseudostome at end of
bent neck; test more or less coiled or folded (Illustrated Guide, 1985).
Species:
Lesquereusia sp.,
test 90 μm long, 75 μm wide, L/W=1.2,
pseudostome very large, 36 μm wide, P/W=,
x 640, Onnenai, Kushiro marsh, Kushiro city, Hokkaido, Japan, October 16, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Test μm long, μm wide, L/W=,
pseudostome μm wide, P/W=, x 640