Review Geographic differences in host specialization between the symbiotic water mites Unionicola formosa and Unionicola foili (Acari: Unionicolidae) Dale D. EdwardsRegan BogardusNicholaus Wilhite OriginalPaper Pages: 683 - 697
Mode of inheritance of resistance to three new acaricides in the Kanzawa spider mite Tetranychus kanzawai Kishida (Acari:Tetranychidae) Kouichi Goka OriginalPaper Pages: 699 - 708
Effect of prey density on sex ratio of two predacious mites, Phytoseiulus persimilis and Amblyseius womersleyi (Acari: Phytoseiidae) Shingo ToyoshimaHiroshi Amano OriginalPaper Pages: 709 - 723
Distributions of the vectors of heartwater, Amblyomma hebraeum and Amblyomma variegatum (Acari: Ixodidae), in Zimbabwe T.F. PeterB.D. PerryS.M. Mahan OriginalPaper Pages: 725 - 740