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Spirotrichea: Hypotrichia: Euplotida: Aspidiscidae

 Aspidisca steini
Buddenbrock, 1920
Aspidisca hyalina Dragesco, 1954

Aspidisca steini Genus: Ovoid, firm; dorsal side convex, ventral side flattened; dorsal surface ridged; adoral zone reduced or rudimentary; macronucleus U-shaped or in two rounded parts (Kudo, 1966).
Species: Cell body ovoid; 35 μm long; outline and dorsal surface smooth (no ribs or thorn); 7 frontoventral, 5-6 transverse cirri; macronucleus horseshoe-shaped (Carey, 1992).

Aspidisca sp. (steini ?), cell body nearly circular 35 μm long, 34 μm wide, dorsal surface smooth, 4 (?) frontal cirri, 5 transverse cirri, x 400, x 640, Saitama Pref., Japan, April 1999, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Aspidisca steini
scale 31 μm scale 63 μm scale 94 μm; x 640
Aspidisca steini Aspidisca steini Aspidisca steini Aspidisca steini

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