Contribution to the knowledge of the oribatid mite genus Setoppia (Acari, Oribatida, Oppiidae), with description of a new species from South Africa
  New Labidostomidae from Austral Africa: the genus Sellnickiella Feider et Vasiliu, 1969
  Imparipes (Imparipes) Pselaphidorum n. sp., a new Scutacarid species phoretic upon African beetles (Acari, Scutacaridae, Coleoptera, Pselaphidae)