Diaphorina citri

Asian citrus psyllid


The Asian citrus psyllid, (Diaphorina citri), is an important pest of citrus in several countries as it is a vector of a serious citrus disease called greening disease or Huanglongbing. It is widely distributed in southern Asia and the disease is responsible for the destruction of several citrus industries in Asia and Africa. In North America, it has spread through most of the southern states and Mexico however the state of Florida is the most affected area by the vectored disease.

Life cycle of Asian citrus psyllid

Adult Asian citrus psyllids are mottled brown wings insects of about 25 to 35 mm long. The adults are active, jumping/flying insects and can readily fly short distances when disturbed. The psyllid’s life cycle includes an egg stage and five nymphal instars. The elongated-oval eggs are light yellow when freshly deposited and bright orange with two distinct red eye spots at maturity. Eggs are anchored to plant tissue in an upright position, and large numbers of eggs may be found on a single spot. Nymphs are green or dull orange. First instar nymphs are docile and move only when disturbed or over-crowded. Development from egg to adult varied from 14 days at 28°C/82.4°F to 49 days at 15°C/59°F. New adults reach reproductive maturity within 2 or 3 days, oviposition begins about 1 or 2 days after mating and adults live for several months. Females psyllids lay more than 800 eggs during their life cycle.