LABORATORY EVALUATION OF CHLORFLUAZURON AGAINST LARVAL PHLEBOTOMINE SAND FLIES (DIPTERA, PSYCHODIDAE)

Laboratory experiments were conducted to evaluate the effectiveness of chlorfluazuron an insect growth-inhibitor against Lutzomyia longipalp is (Lutz & Neiva). Second- and third-instar L. longipalpis were expose d to four different doses (0.65, 0.75, 0.80, and 0.85 mg/ml) of chlorf luazuron added in the larval diet. A direct relationship between dose and larval mortality was observed. Larval mortality was higher in youn ger larvae. In addition to larval mortality, reduced capacity of the a dult females to blood feed, prevention of egg hatching, and morphologi cal abnormalities in adults were noted. A control strategy using chlor fluazuron with other insecticides is suggested to diminish sand fly po pulations in coffee and cacao plantations.