Scale Parthenolecanium persicae - infects plum, apricot, almond trees, vineyards, apple, and mulberry. Also infects some ornamental plants. Massive development of the pest is found in the mulberry trees in Absheron. In the nature the pests winter at the age of larvae of the second age. In late March, early April is the awakening of the larvae II age. In II and III decade of May Parthenolecanium  persicae scale lays its eggs on the mulberry tree. These pests proliferate by parthenogenesis. During this period, the body in adults is concave and the middle part rises to the top. During the egg-laying females are increasing in size, lower body is filled with eggs. Eggs are elongate and yellow color. They are attached to each other grid specifically light color. During this period, the females are brownish-black. The body is elongated, convex on it chitin, very bright. Females lay eggs for 5-7 days. Development of eggs takes place under the sink coccidian. With the development of the eggs inside them appear reddish spots, which gradually turned into a reddish-yellow color.
        In I, II decade of June from the eggs hatch into larvae, during this period, many females are more eggs. Approximately 60-70% of the females at the bottom of the body there are eggs. During the 20-25 days egg laying ends. At this time, one tooth fish female is alive, but then dies. Larvae oval rather flat, trans parent yellow. At this time, 30-40% of females, the eggs hatch into larvae. Such females are at the bottom of the skins of the eggs and free-living larvae. The larvae move to the leaves of the trees, especially they build up on the back of the leaves. Basically larvae attach themselves to the veins of leaves. These larvae are so transparent that they are on a background of leaves barely standing. 40-50 days the larvae pass in the II age at this time they flattened and mid-convex. Larvae II age prior the end of October live on leaves. With the cooling of the air, they migrate from the leaves on the branches. When the migration is late, many larvae II age die. Mortality rate observed mainly in the larvae I age.