Complex sentence: Most species of the Entomophthorales are pathogens of insects, a few attack nematodes, mites, and tardigrades, and some (particularly the genus "Conidiobolus") are free-living saprotrophs.
Split into simpler sentences: Most species of the Entomophthorales are pathogens of insects. A few attack nematodes, mites, and tardigrades, and some (particularly species of the genus "Conidiobolus") are free-living saprotrophs.