Bioecology And Phenological Development Of The Californian Shield (Quadraspidiotus Perniciosus Comst.) In Uzbekistan
Abstract
Dangerous coccids are widespread in Uzbekistan. Of these, the Californian shield insect is a
quarantine pest. It damages many plants. It damages apple, pear, plum, quince, peach, almond,
hawthorn, elm, poplar and others. Diapausing larvae of the first instar overwinter, covered with a
dark gray or black shield. In spring it feeds heavily, molts and forms a scutellum similar to that of an
adult female. After the second molt, adult females form. After mating, the female gives birth to
vagrant larvae, which creep along branches and leaves, and can also settle on fruits. He gives rise to
the next generation.
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