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Spirotrichea: Hypotrichia: Euplotida: Aspidiscidae

Aspidisca cicada
(Müller, 1786) Claparède and Lachmann, 1858
Synonyms: A. costata (Dujadin, 1841), Stein, 1859; A. sulcata Kahl, 1930-5.
Aspidisca cicada 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). No mariginal or caudal cirri; common genus (Carey, 1992).
Species: Ovoid, small and convex on the right; up to 45 μm long, body outline smooth; peristome at posterior expanded to form a swelling; dorsal ridges vary in shape and number; 7 ventral, 5 transverse cirri; macronucleus C-shaped (Carey, 1992).

Aspidisca sp., cell body 30 μm long, 24 μm wide, x 400, x 640, Uruguay, November 1999, photo by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Aspidisca cicada
scale 31 μm scale 63 μm scale 94 μm; x 640
Aspidisca cicada Aspidisca cicada

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