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Heterotrichea: Heterotrichida: Stentoridae

 Stentor igneus
Ehrenberg

Stentor igneus Genus: When extended, trumpet-shaped or cylindrical; highly contractile; some with mucilaginous lorica; conspicuous peristomal field frontal; contractile vacuole anterior-left; fresh water (Kudo, 1966).
Species: Rose-colored or colorless; 200-400 μm long; macronucleus oval; ciliation uniform (Kudo, 1966).

Stentor igneus, cell body 152 μm long, 60 μm wide, x 400, x 640, standing water close to rice field, Shibayama-shigou, Shobu town, Saitama Pref., Japan, February 6, 2005 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Stentor igneus Stentor igneus Stentor igneus Stentor igneus Stentor igneus Stentor igneus Stentor igneus Stentor igneus
Cell body contracted, μm long, μm wide, x 400, x 640
Stentor igneus Stentor igneus Stentor igneus Stentor igneus
Cell body extended, 460 μm long, 64 μm wide, x 200, x 400, x 640
Stentor igneus Stentor igneus Stentor igneus
Stentor igneus Stentor igneus Stentor igneus Stentor igneus

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