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Phyllopharyngea: Cyrtophorida: Chlamydodontina: Chilodonellidae

Chilodonella cucullulus
(Müller, 1786) Kahl, 1931
Synonyms: Colpoda cucullulus, Müller, 1786, Chilodon cucullulus Calkins, 1902

Chilodonella cucullulus Family: Anterior preoral kinetal arcs of all, body tapers at forward end.
Genus: Cell body ovoid, with pre-oral suture skewed left to a point; ventrally flattened, dorsally convex (How to know the protozoa, 1979). With distinct postoral ? beak or unciliated field in ventral body cilia; preoral kinety complete (Illustrated Guide, 1985). Dorsal surface lacks bristles (cf. with bristles Trithigmostoma) ; central zone devoid of cilia (Carey, 1992).

Species: Nineteen to twenty ventral ciliary rows; oral basket with about twelve rods (nematodesmata) and with three preoral membranes; macronucleus oval, a characteristic concentric structure; micronuleus small; body 100-300 μm long (Kudo, 1966). 130-150 μm long (How to know the protozoa, 1979). 45 μm long, numerous contractile vacuoles (Carey, 1992).
Similar Genus ->> Trithigmostoma

Chilodonella cucullulus ?, cell body 105 μm long, 54 μm wide, L/W=1.9, x 640, drainage ditch, Shimo-nanbata, Fujimi city, Saitama Pref., Japan, January 9, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Chilodonella Chilodonella Chilodonella Chilodonella Chilodonella Chilodonella

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