Suborder: Ventral cirri not as distinct files, except Gastrostyla.
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.

->> Description at WPRNO

Google Image Search

S. mytilus 12 samples 3 caudal cirri prominent 1998-2006	S. pustulata ? 138-156 μm Okinawa, 1997	S. putrina ? 130 μm Tokyo, 1997
S. notophora 125 μm Japan, 1997	S. notophora 108 x 45 μm Chaya-numa p. Fukushima city Fukushima, 2005	S. notophora 96 x 37 μm Saitama, 1999	S. notophora 110 x 47 μm 90 x 38 μm Japan, 199?
S. notophora 112 x 51 μm Mizumoto Park Tokyo, 2001	Stylonychia sp. 110 x 45 μm Shimo-muneoka Shiki Saitama, 2004

Similar Genus ->> Histriculus; Oxytricha

Please click on species name for more images.

Copyright Protist Information Server