Microstomum O. Schmidt, 1848

 

  Microstomum lineare (O.F. Müller, 1874)

        Microstomum lineare lineare Dorner, 1902 (N, S)

        Microstomum lineare giganteum Graff, 1912 (N)

  Microstomum melanophthalmus Steinböck, 1933 (3, 4, 5)

  Microstomum ornatum Uljanin, 1870 (4)

  Microstomum papillosum (Graff, 1882) (3, 4, 5)

  Microstomum rubromaculatum Graff, 1882 (3)