Nassophorea:
Nassulida: Nassulina: Nassulidae
Nassula parva
Kahl, 1928
Family: Body ellipsoidal, uniformly ciliated; hypostomial frange short; prominent cytopharyngeal apparatus
(Carey, 1992).
Genus: Oral aperture small, oval (Carey, 1992).
Species: Cell body ovoid and small in size, less than 100 μm long;
cytopharyngeal basket large, 60 μm long;
macronucleus spherical; a single contractile vacuole in the mid-body region;
trichocysts absent (Carey, 1992).
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Similar species --> Paranassula
Nassula parva (or N. rubens ?),
cell body 87 μm long, 45 μm wide, L/W= 1.9,
cyrtos 15 μm in diam.,
long cytopharyngeal basket almost full length of the body, trichocyst absent,
x 400, x 640, Kawagoe, Saitama Pref., Japan, May 2001 by Y. Tsukii
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
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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