Species: Test elongate, small, usually scales invisible (= homogenous in appearance),
18-35 μm long, 7-17 μm wide;
pseudostome 3-6 μm; scales 3-6 μm
(Cash & Wailes, The British Freshwater Rhizopoda and Heliozoa vol. III, 1915).
Trinema lineare Penard ?,
test 25 μm long, 13 μm wide, L/W=1.9,
pseudostome 5 x 7 μm wide,
x 640, a small pond at Kowashimizu, Suwa city, Nagano Pref., Japan, May 21, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640