Statistical tests on adult and larval data were performed in the same manner as the first two insecticide trials, using ANOVA or KruskaleWallis tests. Comparisons of the average number of larvae
and pupae between Rain and No Rain treatments were conducted using either a t-test for the arcsine transformed percent mortality data or a ManneWhitney U test for the data on the number of larvae and pupae. Due to unequal variances, data were log (X þ 1)transformed before analysis.