Family: With two unequal flagella; no pellicle and plastic; with or without a delicate test; solitary or colonial; free swimming or attached (Kudo, 1966).
Genus: Cells attached by a cytoplasmic thread to a stalked vase-like lorica; two contractile vacuoles (Kudo, 1966).
->> Description at WPPNO Google Image Search
Similar genus --> > Bicoeca (Bicosoeca) (Mastigophora, Bicosoecida); Diploeca (Mastigophora, Choanoflagellida, Salpingoecidae)
S. leptostoma
cell body 8 μm
Japan, 199?
S. leptostoma
lorica 12 x 5 μm
cell 8 x 4 μm
Univ. A.V.M.
Obihiro
Hokkaido, 2005
S. epipyxis
cell body μm
Shirakawa
Fukushima, 1999
S. gracilis ?
cell body μm
Shirakawa
Fukushima, 1999
S. gracilis ?
cell body μm
Koshigaya
Saitama, 2001