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Nassophorea: Nassulida: Nassulina: Nassulidae

 Nassula sp.
Ehrenberg, 1833

Nassula Family: Body ellipsoidal, uniformly ciliated; hypostomial flange short; prominent cytopharyngeal apparatus (Carey, 1992).
Genus: Oral aperture small, oval (Carey, 1992).
Species:
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Nassula sp. (N. citrea ?), cell body 66 μm long, 43 μm wide, cyrtos about 8 μm in diam., a process of ingestion of Oscillatoria (this occurred within a minute), x 400, x 640, Higashi-Urawa (Minuma-tanbo), Saitama Pref., Japan, June 2001 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Nassula
Movement to the end of a filament by touching with cyrtos, x 640
scale 31 μm scale 63 μm scale 94 μm; x 640
Nassula Nassula Nassula Nassula
Nassula Nassula Nassula Nassula
Rapid ingestion of the filament through cyrtos, x 640
Nassula Nassula Nassula Nassula Nassula
Nassula Nassula Nassula Nassula Nassula
Nassula Nassula Nassula Nassula

Nassula parva Kahl, 1928: Small, ovoid with large cytopharyngeal basket; 60 μm long; a spherical macronucleus; single contractile vacuole in mid-body region; details of range and suture not given (Carey, 1992).

Nassula rubens Perty, 1852: Small, ellipsoidal; 50-70 μm long; long cytopharyngeal basket; single contractile vacuole; single macronucleus; many trichocysts (Carey, 1992).

Nassula citrea Kahl, 1931: Ovoid or ellipsoidal, anterior not expanded; 70-90 μm long; frange equipped with long membranelles; cytopharyngeal appratus unremarkable; single contractile vacuole; single ovoid macronucelus (Carey, 1992).

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