What are the living habits of thrips?

Thrips use file suction mouthparts to harm the leaves, buds and flowers of flowers. After the young leaves were killed, spots, curls and even death appeared. After the growth point was killed, it turned yellow and withered, resulting in the terminal bud unable to continue to grow and bloom. In potted flower cultivation, thrips often harm orchids. The buds of the damaged orchids have black spots, atrophy, shrivel and fall off, and the leaves of orchids have rust spots, and the surface is rough and brown, about 65438±0cm long. Thrips also mainly harm Ficus microcarpa and Ficus pendula, and banyan bonsai suffers more. The young leaves and buds of Ficus microcarpa form reddish-brown spots of different sizes, the buds wither, and the leaves fold forward along the midvein, forming a jelly-like gall. In severe cases, the young leaves of the whole banyan tree form gall, which seriously affects the ornamental value of the banyan tree. The adult is about 65438 0.5 mm in length and pale yellow to dark brown in color. Six legs, a pair of tentacles, two pairs of feathered wings, good at flying and filing suction devices. Eggs are kidney-shaped, yellowish and translucent. The nymph stage has four stages. 1 The nymph is white and transparent, and the second nymph is light yellow to dark yellow with brown compound eyes. In the third stage, the antenna is divided into two sides, and wing buds begin to appear. The antenna of the fourth stage is light brown, turned back, and the wing bud reaches the fifth and seventh abdominal segments. Thrips adults are active, and most of them are phytophagous. They are important pests that harm flowers and are also herbivores. Adults are afraid of light, hide during the day, and move on leaves, buds and flowers in the morning, dusk and cloudy days to feed. Thrips have a large number of breeding, with more than 15 generations per year. The optimum temperature for the development and reproduction of thrips is 10 ~ 30℃ and 15 ~ 25℃. Under the condition of high temperature and drought, adults lay less eggs, the hatching rate is low, and the mortality rate of newly hatched nymphs is high. Therefore, the damage rule of thrips is that it begins to damage flowers in March-April, and the damage is the most serious in May-June. In July and August, the population of thrips decreased sharply due to high temperature, and the damage was weakened, and it rose to 10 in September.