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Spirotrichea: Oligotrichia: Oligotrichida: Halteriidae

Strombidium viride
Stein, 1867

Strombidium Genus: Paratene makes nearly closed circle around body; ventral kinety often present (Illustrated Guide, 1985).
Ovoid to spherical; adoral zone very conspicuous two to four conspicuous sickle-form frontal membranellae, adoral membranellae extend down cytopharynx; no body bristles or cirri (Kudo, 1966). Body conical, ovoid or elongate posteriorly; somatic cilia absent; AZM composed of large membranelles which emerge from the peristome and encircle the apex of the cell; polysaccharide plates or platelets may conver and strengthen the posterior portion of the body (Carey, 1992).

Species: Cell body 40-80 μm long (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
Similar Genus -> > Halteria

Strombidium viride Stein, 1867 ?, cell body 46 μm long, 37 μm wide, membranelles about 23 μm long, x 400, x 640, Mizumoto Park, Katsushika-ku, Tokyo, Japan, July 2001 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
Strombidium Strombidium Strombidium
scale 31 μm scale 63 μm scale 94 μm; x 640
Strombidium Strombidium Strombidium Strombidium

Strombidium sulcatum Claparède and Lachmann, 1858: Ovoid, 60 μm long; anterior bluntly pointed; AZM extends 1/3 the body length; posterior rounded; the region of cortical platelets from the equatorial cleft to posterior end; a band of trichites presents in this region (Carey, 1992).

Strombidium viridae Stein, 1867 (Syn. Strombidium nasutum Smith, 1897): Conical, with a well-developed peristomial collar; rounded posterior; 80 μm long; bundles of trichites make an equatorial band; posterior covered with polygonal cortical platelets; macronucleus vermiform (Carey, 1992).

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