Thrips, order Thysanoptera, are tiny, slender insects with fringed wings. They feed by puncturing their host and sucking out the cell contents. Certain thrips species are beneficial predators that feed only on mites and other insects. Beneficial species include black hunter thrips and the sixspotted thrips. Pest species (often in the family Thripidae) are plant feeders that scar leaf, flower, or fruit surfaces or distort plant parts. Other species of thrips feed on fungal spores and pollen and are innocuous.
Source: University of California