Scientific name Tettigella viridis (Linnaeus) Homoptera, Leafhopper family. Alias ​​greenleaf fleas, green leafhoppers, large green dust and other dust. Distributed throughout the country. There are 160 species of plants such as millet, corn, rice, soybeans, potatoes, vegetables, and fruit trees. Injurious characters and nymphs damage the leaves, sucking juice, resulting in discoloration, deformity, curling, and even whole leaves withered. In addition, viral diseases can also be transmitted. Habits of life Three generations in the north of the year, wintering under the skin of the branches of eggs. Incubation in April, weeding on weeds, crops and vegetables, 30-50 days nymph period, the first generation of adult emergence period is in late May to early July. The generation period of each generation is generally as follows: the first generation in early April and early July, and the adult appearing in late May; the second generation in early June and mid-August, the adult begins to appear in July; the third generation in mid-July 11 In mid-month, adults began to appear in September. Irregularities occur and generations overlap. Adult phototaxis, strong summer, late autumn is not obvious, may be due to low temperature. Adult and female nymphs can feed on day and night, spawn in host plant stalks, petioles, main veins, shoots and other tissues. The ovipositor pricks the epidermis into crescent-shaped wounds, spawns 6 to 12 capsules and arranges them. Neatly, the epidermis of the spawning plant has a kidney-shaped bulge. Each female can produce 30 to 70 eggs, non-overwintering eggs 9 to 15 days, overwintering eggs for more than 5 months. In the early period, mainly crops, vegetables, weeds, etc., were planted. By September and October, crops were successively harvested and weeds were withered. They were then concentrated on autumn plants, winter wheat, and other green plants. In mid-October, the third generation of adults migrated to fruit trees. The trees are damaging and lay eggs in the branches, and in late October they are spawning until the autumn. Overwintering with eggs. Prevention methods (1) Summer light traps and kills the second generation of adults, reducing the occurrence of the third generation. (2) When adult nymphs and nymphs are concentrated on millet plants such as millet, 2.5% trichlorfon powder or 1.5% powder of 1605 powder or 2% leaf powder (Isoprocarb) powder is sprayed in time, 2 kg per 667m2. . (3) If necessary, it can be sprayed with 2.5% Baoyou EC 2000-3000 times fluid, and 10% Da Gong Chen wettable powder 3000-4000 fluid. Face Masks,Medical Facemask,Filtration Isolation Medical Facemasks,Anto-Bacteria Face Masks Zhende Medical Co.,Ltd , https://www.zdmedicalproduct.com
Morphological characteristics Adult body length 7-10mm, slightly smaller than the female, blue-green. The head is orange-yellow, with 1 small black spot on each side, 2 reds on one eye, and 2 black spots on one eye. Former fins leathery, greenish blue with microstrip blue, translucent at the end; frontal wing back, hind wings and abdomen back are black, abdomen on both sides and ventral orange. Yellow, white and orange yellow, fiscal section 3. Eggs are oval in shape, slightly curved, with a pointed end, approximately 1.6 mm long, and milky to yellow-white. Nymphs and adults are similar, a total of 5 instars, gray and white in early age; 2 instar light gray microstrip yellow-green; 3 instar yellowish green, chest and abdomen on the back of 4 brown vertical lines, there are wing buds; 4 and 5 years of age with 3 years of age, The body is 6-8mm long when cooked.