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Litostomatea: Haptoria: Haptorida: Spathidiidae

 Spathidium syrtis
Lepsi, 1964

Spathidium Genus: Body long to ovoid; apex fan-shaped; txicysts evenly distributed along edge of apex (Illustrated Guide, 1985). Body elongate, circular in cross section; antrerior obliquely truncated, surmounted by an unciliated apical ridge, which is lined with trichocysts; cytostome slit-like (Carey, 1992). Very many species (Corliss, 1979).
Species: Cell body ovoid, rotund, 255 μm long, with a well-developed anterior (apical ridge thick), macronucleus ellipsoidal (Carey, 1992).

Spathidium syrtis (or extensum ?), cell body 162 μm long, μm wide, a single contractile vacuole located at posterior end, x 100, x 200, x 400, x 640, Uruguay, November 1999, photo 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
Spathidium Spathidium Spathidium Spathidium Spathidium Spathidium Spathidium Spathidium Spathidium
Spathidium Spathidium Spathidium Spathidium

S. syrtis Lepsi, 1964: Cell body ovoid, rotund, 255 μm long, with a well-developed anterior (apiccal ridge thick), macronucleus ellipsoidal (Carey, 1992).

S. extensum Kahl, 1933: cell body long and tubular, 200-250 μm long, anterior truncate and expanded, posterior rounded, trichocyst present in the anterior, macronucleus long and moniliform (Carey, 1992).

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