Suborder: Ventral cirri not as distinct files, except Gastrostyla.
Family: Frontoventral cirri scattered on forward part, sometimes on rear part; never on mid area of ventrum (Illustrated Guide, 1985).
Genus: Elongate, narrowed posteriorly to form a pointed tail; dorsoventrally flattened; AZM small, 1/4 body length; marginal cirri confluent posteriorly; two macronuclei (Carey, 1992). Body may have tail; one or more frontoventral cirri; postoral cluster of 3 cirri present (Illustrated Guide, 1985).
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S. sphagnicola
110 x 40 μm
Akigase park
Saitama, 1998
S. sphagnicola
140 x 55 μm
Japan, 199?
S. sphagnicola ?
μm
Senjo-ga-hara
Nikko
Tochigi, 2003
S. sphagnicola ?
140 x 55 μm
near Karakemi m.
Omachi
Nagano, 2005