Genus: Test more or less compressed; pseudostome elliptical on end of a clear collar
(Illustrated Guide, 1985).
Species:
Test not compressed, pseudostome dented (Cash, 1915).
Sphenoderia dentata (Moniez) Penard ??,
test 29 μm long, 20 μm wide, L/W=,
pseudostome 11 μm wide, scales elliptical in shape (7 x 5 μm),
x 640, a small wetland near Numa-no-hara marsh (Genseikaen), Madarao highland (Niigata & Nagano Pref.), Myoko village, Niigata Pref., Japan, May 15, 2005 by Y. Tsukii 31 μm
63 μm
94 μm; x 640
Genus: Test more or less compressed; pseudostome elliptical on end of a clear collar
(Illustrated Guide, 1985).
31 μm
