Arcellinida: Lesquereusiidae (formerly Paraquadrulidae)
Quadrula symmetrica Wallich (Kudo 1966)
Quadrula symmetrica (Wallich) F. E. Schulze (Cash 1909)
Genus: Test flask-shaped (Illustrated Guide, 1985).
Species: Test variable in size, about 96 μm long, 60-70 μm wide,
40 μm in thickness; frontal view pyriform, pseudostome slightly convex,
dorsoventrally compressed; transparent chitinous plates arranged in series across the surface
(Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).
Quadrulella symmetrica Wallich,
test 74 μm long, 40 μm wide, L/W=1.9, pseudostome 18 μm wide,
x 640, No.2, Oh-Yachi, Komado marsh (No.2), Showa village and Tajima town, Fukushima Pref., Japan, May 21, 2007, by Y. Tsukii
94 μm; x 640
Images of collecting locality:
No.2, Oh-Yachi, Komado marsh (No.2), Showa village and Tajima town, Fukushima Pref., Japan, May 21, 2007, by Y. Tsukii
Please click on images for viewing enlarged.
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