Oribatologic notes
  A question of synonymy: The species Damaeus verticillipes Nicolet, 1855, and Damaeus quadrihastatus Markel and Meyer, 1960 (Acarina, Oribatida)
  Morphometric definition of the notogaster of some species in the genus Oppia C. L. Koch (acari, oribatei). Application of the sinus concept
  About stases evolution in some arthropoda