Short pest overview:
It’s is a major pest of fruit trees. Quadraspidiotus perniciosus is a hemipterous insect in the family Diaspididae and it causes damage and crop losses to many fruit crops. This pest also infests deciduous trees and brushes.
This species originated in Siberia, North-East China and the Northern part of the Korean peninsula. It has spread to every continent except Antarctica and is a major pest of fruit trees.
There may be several generations each year in warm climates but in cooler regions there is a single generation. Over the course of two months, yellow crawlers are born viviparously and emerge from the back of the test at the rate of two or three a day.