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 39 μm long, 17 μm wide, L/W=2.3,
pseudostome 10 μm long,
scales elliptical in shape (5-6 x 4.5-5 μm),
x 640, Tane-ike (pond), Togakushi highland, Shinano town, Nagano Pref., Japan, June 12, 2005 by Y. Tsukii
31 μm
63 μm
94 μm; x 640