This genus was described by Hukui in 1939.
The type species is Filipodium ozakai.
The mucron is broadly funnel shaped with papillae around its rim
The gamonts are elongate, with longitudinal striations and with many protrusible filaments emerging from beneath the pellicl
The gametocysts have numerous many oocysts
The gametes dissimilar: the male gametes not flagellated
The oocysts ellipsoidal or ovoid and have 8 sporozoites.
The species infects sipunculid worms.
The parasite infects the gastrointestinal tract and is presumably transmitted by the orofaecal route but the details of this mechanism are presently unknown.
- F. ozakii — Siphonosoma kumanense
- Cavalier-Smith, Thomas (2014). "Gregarine site-heterogeneous 18S rDNA trees, revision of gregarine higher classification, and the evolutionary diversification of Sporozoa". European Journal of Protistology. 50 (5): 472–495. doi:10.1016/j.ejop.2014.07.002. PMID 25238406.
- Hukui (1939). "On the gregarines from Siphonosoma kumanense (Kefer-stein), Spengel". J Sci Hiroshima Uni Zool. 7: 1–23.
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