Figure 1. Emergence pattern of Encarsia formosa as a function of host instar parasitized. Parasitized whiteflies were examined daily and the time of parasitoid emergence was recorded. The day on which adult parasitoid emergence was first observed was designated day 1 (“onset”). Percent adult emergence for day 1 and for each succeeding day = number of adults that emerged on a given day/total number of adults that emerged. Each point represents the mean of at least three separate determinations. For each determination, n 100. To avoid confusion, standard errors have not been indicated. However, for any given point, the value of the standard error was about 10% of the point's value.