Free-living with ciliated body; with rhabdites and two eyes; Inner longitudinal muscles of pharynx 24-25; testes in middle third of body or 3rd quarter; seminal vesicle in bulb without cuticular apparatus; vitellaria papilla-less; uterus with sphincter, one egg at a time; eggs unstalked, triangular; cement glands present;
Diagnosis for the valid (accepted) taxonomic name
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