Homoptera psyllidaceae
Paulownia wood lice nymphs
【Host】Qingtong
【Morphological characteristics】 Adult insects, body yellow-green, coated, with black or black brown markings; the wings are colorless and transparent, and the wing veins are light brown. The eggs are oblong and ovate, pale yellow or yellowish brown at first birth and reddish yellow near hatching. Young nymphs are slightly rectangular, yellow or green, the body of the old nymph is nearly cylindrical, the tea yellow is often green, the abdomen has developed wax glands, the body of the old nymph is nearly cylindrical tea yellow is often green, the abdomen has developed wax glands, so the body is covered with white flocculents.
【Occurrence law】Generations are not neat, and the overlap phenomenon is serious. Overwinter on the branches with eggs. Nymphs and adults tend to be infested by feeding on the back of the leaves and young branches of the tung tree, and secrete white flocculent wax, resulting in leaf surface atrophy and early fall.
【Control】In the germination stage of Qingtong, rinse or spray 10% imidacloprid wettable powder with water 2000 times; in the later stage of harm, spray ▪ thiazide to kill phosphorus (total active ingredient content: 20%) 1000 times, pay attention to the back of the leaves, the base of the petiole and the new shoots of the green tree evenly sprayed; protect the use of natural enemies such as grasshoppers.
Adult paulownia lice
Natural enemy eggs of the green paulownia lice