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Oligohymenophorea: Peritrichia: Sessilida: Operculariidae

 Orbopercularia sp.

Orbopercularia Genus: Colonical when mature; macronucleus rounded; some species loricate (Illustrated Guide, 1985). Stalk non-contractile.
Species:

Orbopercularia sp. ?, cell body μm long, μm wide, L/W=, x 640, standing water on a bank under Kurome-gawa-bashi (bridge), Kurome River, Hizaori-cho, Asaka city, Saitama Pref., April 20, 2008, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Orbopercularia Orbopercularia Orbopercularia Orbopercularia Orbopercularia

Images of collecting locality: Standing water on a bank under Kurome-gawa-bashi (bridge), Kurome River, Hizaori-cho, Asaka city, Saitama Pref., April 20, 2008, by Y. Tsukii

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