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Nassophorea: Peniculida: Frontoniina: Frontoniidae

Frontonia depressa
(Stokes, 1886)
Frontonia parvula Penard, 1922

Genus: Postoral kineties usually to left of oral poykinetids (Illustrated Guide, 1985). Left edge is more curved than right edge; cytopharynx with numerous strong fibrils; ectoplasm with numerous fusiform trichocysts; macronucleus oval; one to several micronulei (Kudo, 1966).
Species: Cell body 60-80 μm long; macronucleus short sausage-shaped; a single micronucleus; a single contractile vacuole (Kahl, 1930).


Frontonia depressa, cysts 32 μm in diam., x 100, x 200, x 400, x 640, Japan, December 1998, by Y. Tsukii


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