Scientific name Dictyoploca japonica Butler Lepidoptera, Bombyxidae. Distribution of Northeast China, North China, East China, Central China, South China, and Southwest China. Host Ginkgo biloba and other medicinal plants. Other hosts include apples, pears, plums, persimmons, walnuts, chestnuts, hazel and sweet gum. The characteristics of larvae feeding on the leaves of host plants such as ginkgo biloba or grazing leaves seriously affect the yield. Morphological characteristics Adult body length 25-60mm, wingspan 90-150mm, grayish brown or purple brown. The female moth antennae are dentate and the male moth is feathery. The horizontal lines of the forewings are purple-brown, and the horizontal lines are dark brown. The two lines are close to the trailing edge for foreign exchange. The middle part has a triangular light-colored area and the middle chamber has a crescent-shaped transparent spot at the end. The hind wings have a wide red area from the base to the outer horizontal line. The submarine line area is orange-yellow and the margin line is grayish yellow. There is a large eye-like spot at the end of the middle chamber, and the inside of the plaque has white lines. There are l white crescent plaques at the hips of the hind wings. The egg is about 2.2mm long, oval, grayish brown, black spots on one end. The last instar larvae are 80 to 110 mm long. Body yellow green or blue-blue. The top line is yellow-green, the sub-line is light yellow, the valve is greenish white, the valve line is milky white, the valve is dark green at the lower line of the valve and the abdomen, and the hairy tumors with blue-white hairs and protruding tumors are present on each body section. Hard hairy. It is 30-60mm long and yellow to dark brown. Long 60-80mm, yellow brown, mesh. Life habits 1-2 years old, Liaoning, Jilin, born l generation, wintering eggs. In early May of the following year, the wintering eggs begin to hatch. During the period from May to June, they enter the larvae and cause damage. In the middle of June, the leaves of the trees are often used to eat light. Mating and spawning. The eggs are prolific in the 1-3m below the trunk and the tree rights, dozens of grain to more than a hundred grain production. The main natural enemies are Trichogramma, black egg bee, velvet bees, grasshoppers, ants and so on. Prevention methods (1) June-July combined with ginkgo garden management, removal of earthworms. Winter clears the bark gap of wintering eggs. (2) Grasp the female moth to spawning on the trunk, prior to the damage of the larvae during the hatching of the upper tree and before the third age of the larvae, spray 90% crystal trichlorfon or 50% dichlorvos or 50% malathion oil 1000 times liquid. BGO PET CT,Large Extended Axial Fov,Sipm Technology Material,Positron Emission Tomography MinFound Medical Systems Co., Ltd , https://www.minfoundmed.com