Family: Oral nematodesmata not a ring around mouth, more prominent to side and rear of mouth;
typically 3 long, large polykinetids in oral cavity; cytostome expands along postoral suture .
Genus: Postoral kineties usually to left of oral poykinetids (Illustrated Guide, 1985).
Left edge is more curved than right edge; cytopharynx with numerous strong fibrils; ectoplasm with
numerous fusiform trichocysts; macronucleus oval; one to several micronulei (Kudo, 1966).
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