whitefly

any of several plant-sucking, homopterous insects of the family Aleyrodidae, having the body and wings dusted with a white, powdery wax, and being widely distributed chiefly in tropical regions where they are often serious crop pests, as Dialeurodes citri citrus whitefly, commonly occurring on citrus trees, and Trialeurodes vaporariorum greenhouse whitefly, inhabiting greenhouses.