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Nassophorea: Nassulida: Nassulina: Nassulidae

 Nassula sp.
Ehrenberg, 1833

Nassula Family: Body ellipsoidal, uniformly ciliated; hypostomial frange short; prominent cytopharyngeal apparatus (Carey, 1992).
Genus: Oral aperture small, oval (Carey, 1992).
Species:
Similar species --> Paranassula

Nassula sp. fed on Oscillatoria (cytoplasm filled with food vacuoles containing the bluegreen algae), cell body 78 μm long, 35 μm wide, L/W= 2.2, cyrtos 12 μm in diam., x 400, Tsukuba City, Ibaraki Pref., Japan, September 2000, by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
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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