Microsporidia have been observed in several mite species especially in oribatid mites,
although other groups of mites may also be affected. In recent years, Microsporidia infections
in Phytoseiidae have received considerable attention, as they are often found in mass rearings
of beneficial arthropods. They affect the efficacy of these predators as biological control agent
of insect and mite pests. Microsporidia do not seem to have potential for biological control of
mites.