Lace bugs are usually host-specific and can be very destructive to plants. Most feed on the undersides of leaves by piercing the epidermis and sucking the sap. The then empty cells give the leaves a bronzed or silvery appearance. Each individual usually completes its entire life cycle on the same plant, if not the same part of the plant.
Lace bugs sometimes fall out of trees, land on people and bite, which, although painful, is a minor nuisance. No medical treatment is necessary.1