Comparative morphology, ultrastructure and functions of the excretory organ (postventricular midgut) in the Parasitengona (Acariformes)
  Descriptions of two new and unusual chiggers from West Pakistan (Acarina, Trombiculidae)
  Revision of the subgenus Brunehaldia Vercammen-Grandjean, 1956. Ddescription of two new species (Trombiculidae: Acarina)
  New species and new records of chiggers (Acarina: Trombiculidae) from Texas