Abstract
The sugarcane rootstock borer weevil, Diaprepes abbreviatus (L.), is a pest of sugarcane and citrus in the West Indies and Florida (Hall 1995). Previous tests at the U.S. Horticultural Research Laboratory in Orlando indicated that the insect growth regulator diflubenzuron (1-(4-chlorophenyl)-3-(2,6-difluorobenzoyl)urea) significantly reduced the reproductive potential of D. abbreviatus when applied to citrus foliage (Schroeder et al. 1976, Lovestrand & Beavers 1980, Schroeder et al. 1980). The effect was similar to that reported by Moore & Taft (1975) for the boll weevil, Anthonomus grandis Boheman. Eggs from treated weevils had embryonic development but larvae failed to hatch. Micromite
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