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Oligohymenophorea (formerly Nassophorea): Peniculida: Frontoniina: Frontoniidae

 Disematostoma bütschlii
Lauterborn, 1894

Disematostoma Genus: Striated sutural regions dorsal and to rear of cytoproct; body tapers to rear from 3 sides (Illustrated Guide, 1985). Broadly rounded anterior end and bluntly pointed narrow posterior end; sausage-form macronucleus; a micronucleus; contractile vacuole middle of body with collecting canals; fresh water (Kudo, 1966).
Buccal structure is well-stained by azure C (Y. Tsukii, 2000).
Species: Cell body 140-155 μm; long (Kahl, 1930).
Similar Genus ->> Frontonia

Disematostoma bütschlii Lauterborn, cell body 213 μm long, 110 μm wide, cytostome about 70 μm long, trichocysts 8 μm long, x 400, Vermont-Maine U.S.A., August 7-13, 1999, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Disematostoma Disematostoma

D. bütschlii, Lauterborn: 135-155 μm long; with or without zoochlorella; fresh water (Kudo, 1966).
D. colpidioides von Gelei: Reniform, twisted; 100-160 μm long (Kudo, 1966).

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