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Spirotrichea: Stichotrichida: Sporadotrichina: Oxytrichidae

Stylonychia putrina
Stokes, 1885

Stylonychia putrina Family: Frontoventral cirri scattered on forward, mid- and rear areas of ventrum.
Genus: Marginal cirri not confluent at rear; oral cavity wide, expansive; caudal cirri (usually 3) prominent (Illustrated Guide, 1985). Cell body ovoid to elongate, inflexible; large AZM supported anteriorly by a collar; two rows of marginal cirri not confluent posteriorly; strongly-developed frontoventral & transverse cirri present; three long, stiff caudal cilia; dorsal surface ornamented by short rows of cirri; two macronuclei; cyst stage recorded in some species (Carey, 1992).
8 (3 + 2 + 3) frontal, 5 ventral, 5 transverse, 3 caudal cirri.

Species: 125-150 μm long (Kudo, 1966). Elongate, but anterior not wider than posterior; 127 μm long; AZM 1/3 to 1/2 body length; encystment (Carey, 1992).

Stylonychia sp. (putrina ?), cell body 130 μm long, μm wide, x 400, Tokyo, Japan, 199? by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Stylonychia putrina Stylonychia putrina Stylonychia putrina

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