Species (4)

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  Metazoa Nematoda Monhysterida Xyalidae Theristus

  Theristus roscoffiensis

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  Metazoa Nematoda Monhysterida Xyalidae Theristus

  Theristus hirsutus

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  Metazoa Nematoda Monhysterida Xyalidae Theristus

  Theristus flevensis Schuurmans-Stekhofen 1935

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  Metazoa Nematoda Monhysterida Xyalidae Theristus

  Theristus setosus Bütschli 1874

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