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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).

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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