The woolly white fly (right, secreting white and waxy filaments) and the citrus blackfly are new pests of citrus in Louisiana. These are piercing, sucking feeders in both the nymph and adult stages. The citrus black fly lays its eggs in a spiral fashion, making them easy to detect. The nymphs are clear when they first hatch and gradually change color as they mature, depending on species. The eggs are usually placed on the underside of the leaf surface, and the nymphs develop there. The nymphs develop through three instars and then pupate. These empty clear shells are often mistaken for developing nymphs. Large populations of white flies occur in March-April, June-July and September-October. Populations are easily managed when caught early, before multiple generations can develop. Whiteflies are also consumed by ladybugs.