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Litostomatea: Haptoria: Haptorida: Spathidiidae

 Spathidium sp.
Dujardin, 1841

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:

Spathidium sp., cell body 63 μm long, μm wide, morphologically similar to S. procerum but smaller, contractile vacuoles posterior and aligned with dorsal ridge, x 400, Higashi-hiroshima, Hiroshima Pref., Japan, October 1998o by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Spathidium Spathidium

Spathidium procerum Kahl, 1930: Cell body vermifrom, 260-400 μm long, with an expanded, fan-shaped anterior; a large apical ridge with many trichocysts follows the curve of the obliquely truncate apical region; macronucleus long moniliform (Carey, 1992).

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