All the immature stages are inconspicuous and easily overlooked. They are usually pale, almost translucent, and are superficially similar to certain scale Insects. Late-stage nymphs and pupae may also have thin waxy threads that can resemble those produced by mealybugs. Adult whiteflies emerge from a slit that develops along the back of the pupal skin. Ratios of male to female whiteflies vary.
More females occur in late spring than in winter.
Under favorable conditions, a generation of the greenhouse whitefly takes three to four weeks to complete. Each female can lay 400 eggs over a period of up to two months. Usually they produce many fewer eggs. Adult greenhouse whitefly. Control of Whiteflies Prevention is the best management.