Body long, no statocyst, round to oval brain with brain capsule; female gonad with separate germaria and vitellaria; vitellaria in numerus isolated follicles serially arranged in front body; germaria lying in front of pharynx; unpaired testis in front body, but with paired vasa deferentia and paired false siminal vesicles; uniform muscle-less copulatory organ with long tubular stylet. Pharynx with intermediate position; corresponding to pharynx plicatus: ciliation of outer and inner pharynx epithelium, exclusively extrapharyngeal glands; corresponding to pharynx rostulatus: outer form with grasping lip, full differentiation against body parenchyma, construction of musculature, restriction of outer pharynx border on the distal part;
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