Here they are Giant Mexican Whitefly. Generally they do not respond to such things are Malathion, because the eggs are not susceptible to them, and the swirls of eggs mature over several days or weeks, providing a constant stream of new infestation. Behr makes some systemic products that work for about 9 months. Don't know if they are suitable for fruiting plants. They thrive on certain host plants, sch as hibiscus, but will ultimately colonize almost anything green and succulent, such as figs, bananas, citrus, and the like. I removed almost al my hibiscus. If they do not have a preferred host, they are much less of an issue. They do not survive freezing. Their lifecycle ebbs and flows with temperature - cooler and they multiply slower, warmer and they take off. The ones on figs will die off when dormancy occurs, and if there is no other host, there will not be a re-infestation.