Morphological separation of adult males of Piona dispersa Sokolow, 1926 and Piona variabilis (Koch, 1836) (Acari: Hydrachnidia: Pionidae)
  New insights into the distribution, ecology, and systematic position of the rare water mite Rutripalpus limicola Sokolow, 1934 (Acari: Rutripalpidae)
  Contribution to the life history and morphology of the water mite Panisellus thienemanni (Acari, Hydrachnidia: Hydryphantidae)