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).
Frontonia sp., stock Tms-2, stained with Azure C,
cell body μm long, μm wide,
x 640, Tochigi Pref., Japan, 199? by Y. Tsukii
16 μm 32 μm 63 μm; x 640