Kelthane is the best control for this problem and it may be necessary to spray a second time as the pesticide will not kill the eggs of the mites. Lubber grasshoppers are coal black with a yellow band around the body. When the insect is maturing it will eat almost everything in site. Dursban is a good control. If you permit these hoppers to mature, the females will make a small hole in the soil and lay many eggs in it that will hatch next year to plague you again.
Hot weather is a favorite time for all insects.
Plants should be inspected on a weekly basis. Gil Whitton, columnist, radio and television host, author and adjunct faculty member at the University of Florida, is a horticultural consultant and tree and plant appraiser.