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Ciliopohora: Spirotrichea: Heterotrichia: Blepharismidae

Blepharisma americanum
var. trinodatum
Suzuki, 1954
Synonym: B. undulans americanus Suzuki, 1954

Genus: Elongate, ovoid; anterior apex often curves over the peristome; non contractile (Carey, 1992). In front of cytostome a two-layered undulating membrane on right edge; contractile vacuole and cytopyge terminal; rose-colored; many species (Kudo, 1966).
Species: Pink, 115-220 μm long; peristome nearly 1/2 cell length with conspicuous undulating membrane; macronucleus multinodal with 3-7 nodes (moniliform); 6-20 micronuclei (Giese, 1973). 150-300 μm long (How to know the protozoa, 1979).

Blepharisma americanum var. trinodatum, tape No. 0105, time code 0532, fed on Chilomonas paramecium, cell body μm long, μm wide, x 400, x 640, Vermont-Maine U.S.A., August 7-13, 1999, by Y. Tsukii

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