Despite reports of arthropods successfully controlling plant diseases, this strategy is still underexplored in biological disease management. Iolinids are omnivorous predatory mites that occur naturally on tomato plants and are one of the most promising natural enemies for control of the tomato pest Aculops lycopersici (Acari: Eriophyidae). They also feed on fungi and have been demonstrated to control powdery mildew infections...