Two new species of Holoparasitus Oudemans, 1936 from Europe (Parasitiformes: Parasitidae)
  Ixobrychiphilus, a new genus of the family Syringophilidae (Acariformes: Prostigmata)
  The tropics as ancient cradle of oribatid mite diversity
  Occurrence of the mite Ophionyssus natricis (Acari: Macronyssidae) on captive snakes from Panama
  Contribution to the knowledge of the genus Plenotocepheus (Acari, Oribatida, Otocepheidae)
  Description of Halolaelaps coulsoni n. sp. (Acari, Halolaelapidae) from the High Arctic
  An homage to Prof. Dr. Gerd Alberti (1943-2016)
