The scientific name is Myl10cerinus aurolineatus Voss, Coleoptera. Alias ​​tea leaf aphid, black and green elephant weevils, green weevil, long-horned green weevil, flower chicken mother. The distribution ranges from Shandong, Hebei, Shanxi, and Shaanxi to the south, Fujian, Guangdong and Guangxi to the south, Binhai to the east, Sichuan and Yunnan to the west. The tea areas in Anhui, Hubei, Zhejiang, Jiangsu, Fujian, Jiangxi, and Hunan have been heavy all year round.
Host tea, camellia, ramie, orange, apple, pear, peach, chestnut, hedgehog and so on.
Injury characteristics: Adult larvae eat fresh leaves into irregular nicks, resulting in reduced yields; larvae feed on fibrous roots and organic matter of tea trees in soil. The summer tea suffered heavy losses.
Morphological characteristics Adult body length 6-7mm, grayish black, body back covered with yellow-green scales integrated spots and stripes. Ventral yellowish green to green scales. Antennae eleven sections, knee-shaped, stalk section length, end 3 inflated. The elytra has a yellow-green longitudinal band, with a wide black striae near the center. Egg length 0.48 to 0.57mm, milky white to dark gray. The last instar larvae have a body length of 5-6.2 mm, no feet, brown heads, body milky white to yellow-white, mostly wrinkles, and yellow-white hairs.蛹 5.4-6mm long, yellow-white, long oval. Long 6-7mm, oval. (right)
Life habits are 1 generation old, wintering with mature larvae in the soil under the tea bushes. In the following year, Anhui began to phlegm at the end of April to the beginning of May. In the middle of May, adults emerged. In June, they entered the peak period and laid eggs until the beginning of August. The main damage summer tea. The duration of each insect stage: egg period 7-15 days; larval period 270-300 days; flood season 9-14 days; adult period 50-70 days. Adults like to emerge at noon, lurking in the soil for 2-3 days. The body color changed from milky to yellow-green and climbed to the tea bushes for feeding, and then climbed to the tea tree. Adults like to enjoy activities during the day and are particularly active in the afternoon. They are not strong at flying, they are good climbers, they are suspended after being frightened, and they lurk in hidden places from night to morning. There is very little activity. Adult mating is also carried out at dusk. After the mating, the female adults enter the soil the next day. The eggs are scattered in the top layer of the rhizosphere or under the fallen leaves, and they also gather together. The tea gardens with strong growth and high tree crowns have a large number of insect populations. The newly hatched larvae feed in the shallow soil, mature in the soil, and overwinter and phlegm.
Prevention methods (1) Remove litter in time in winter or spring, and timely plough can kill some larvae. (2) adults fall into adulthood and concentrate to kill. (3) spraying 80% dichlorvos EC or 90% crystal trichlorfon, 50% malathion EC 800 times, or 50% fenthrio EC 1000 times, 95%, before adult emergence or in low larval stage Soluble powder 1000 to 1500 times, 50% acephate EC 800 times, and 90% captan soluble powder 1500 times. It is best to spray the upper teaspoon thoroughly before dusk. When preventing and controlling larvae during August-September, use 50% phoxim 0.5 to 0.6 kg per 667m2. Sprinkle 3000k8 of water on the top soil layer of the canopy, or use 95% Bataan soluble powder per 0.2-0.3kg per 667m2. After soil withdrawal.
Medical Coveralls,Best Lab Coats For Chemistry,Surgical Disposable Gown,Non-Woven Protective Clothing
Wuxi Kanghe Medical Consulting Co., Ltd. , https://www.jskanghe.com