Asian citrus psyllids cause serious damage to citrus twigs, leaves, flowers and fruits. Currently these psyllids are considered as the most dangerous pest of citrus industry as they transmit pathogenic bacteria (Candidatus Liberibacter asiaticus) that causes citrus greening disease, also known as huanglongbing. These bacteria mainly block phloem tissue that in turn inhibits food transportation that weakens trees and eventually kill them. While feeding, Asian citrus psyllids also injects toxin in the twigs and leaves that causes dieback and deformation of leaves and shoots, and premature defoliation. Also, honeydew excreted by asian citrus psyllids promotes the growth black sooty mold that affects the process of photosynthesis. Sooty mold also reduce marketability of fruits.
Asian citrus psyllids lay eggs on growing shoots and close to new leaf buds. Eggs hatch into small nymphs that start feeding on young succulent leaves and develop through five nymphal instars (stages) and become adults. Under favourable conditions, asian citrus psyllids can complete over 25 generations in a year.