Scientific name Aspidiotus hederae Vallot Homoptera. Alias ​​Ivy Shield. Distribution in most parts of the country, the victims of heavy in the north, the common in the greenhouse or greenhouse flowers, medicinal plants. Hosts such as ivy, asparagus, brown palm, cycad, privet, oleander, sweet-scented osmanthus, evergreen, camellia, azalea, gardenia, mimosa, strelitzia, peach, plum, citrus and other medicinal plants and flowers, etc. . The characteristics of female adult nymphs and nymphs on the branches, vines, leaves, petioles, and fruits attract the sap of the plants, resulting in yellow leaves and branches and a serious death of the whole plant. Living habits 3 generations in Beijing, nymphs appear in early April, crawling for a period of time after the selection of branches, leaves, etc. began to fix the damage, often secrete waxy substances, and gradually form a shell, continue to suck the plant juice under the shell, serious damage Thick integration layer. The second generation of nymphs appeared in July and the third generation of nymphs appeared from September to October. In southern or northern greenhouses, breeding and damage can continue as long as conditions are right. Natural enemies include parasitic wasps and red dot ladybugs. Control methods (1) Pay attention to the inspection of the victim's branches, the damage of the shells on the victim's leaves, and the spawning and hatching of the insects under the shell. Few worms can be sprayed with water and can be sprayed with neutral detergent 70-100 times. In the adult period, artificially brushing or cutting out worm-bearing branches is concentrated and burned. (2) When introducing or purchasing medical plants, flowers, or fruit trees and seedlings in the south, inspections shall be conducted to prevent the entry of insect seedlings. Do not plant insect-bearing seedlings. When pests are found, they shall be sprayed and killed in time to prevent their spread. . (3) Strengthen management, enhance growth potential and resistance to insects. (4) Dig a few radial grooves around the plants during the period of damage, embed 5% quinophosphate granules in the ditch, water after covering the soil, and use 5% quizphos granules for herbal plants, with a spacing of 20cm. The use of drugs 1g, woody medicinal plants or flowers dry dose per cm dose of 1-1.5g; In addition, you can also water 40% dimethoate EC 1000 times, per cm diameter pouring good liquid 0.3-1 .5kg, with degree of drenching, (5) pay attention to the protection and use of natural enemies. Dongguan Anmeixuan Electronic Technology Co., Ltd , https://www.hyashine.com
Morphological characteristics Female shell is round, thin and flat, about 2mm in diameter, white to grayish white, 2 shells in the middle or near the center, yellow. The female adults were ovoid, 0.69 mm long, and 3 pairs of hips. The middle hips were slightly separated from each other with 2 hips interspersed. The base of each hip had hardened triangular plaques, and the third pair had smaller hips. The tip is slightly pointed. Vulva with 4 groups of weeks glands. The back line of the sub-region is rich. The male shell is about 1.3mm long, slightly oval, with 1 shell point, at the head end, with the same color as the female shell. Oval, light yellow. Nymphs are oval and light yellow.