Where are psyllids, aphids, scale insects and whiteflies found?
• Some are solitary but most form groups around a common food source. • When disturbed they jump, run away, remain still or emit an chemical informing others of danger. • Most lerp and female scale insects are fixed to a plant surface. They hide themselves under waxy or sugary secretions, which harden and form a protective shield. These shields are highly variable in shape, with dome-like to scallop-like shells. • They are primarily sap feeders. • Many, especially aphids and mealybugs, are tended by ants, which drink the honeydew they exude. • Some produce eggs but some such as aphids produce live young. Some do not mate and produce only female offspring. • They are active during the day or night.
