Scientific name Eurydema festiva ch10rotica Horvath Hemiptera, Polygonaceae. Synonyms Eurydema maracandicum Oschanin, E.festiva Linnaeus. Distribution of Xinjiang, Ningxia, Gansu, Qinghai, Inner Mongolia and other provinces. It is an approximate species of turfgrass. Host rape, cabbage, cauliflower, broccoli, cabbage, radish, bitter gourd, round canola, mustard and other cruciferous vegetables and potatoes. Characteristics of damage Adult nymphs and nymphs suck the cruciferous vegetable juices, especially like to suck buds, tender stems or young leaves, buds and tender pods, saliva of the vegetable lice stimulate the host tissues. Can hinder the normal metabolism of sugar metabolism and assimilation, the residual yellow and white to dark brown spots in the victim, the seedlings cotyledons, caused by wilt, flowering damage caused by poor pod pods, larvae also spread soft rot. Morphological characteristics Adult female adult body length 6.5-8mm, width 3.5-4.5mm; male body length 7-8.2mm, width 3.4-4.2mm, oval, shape and vegetable melt similar, The pattern of Xinjiang dish is yellow, white and orange red with black spots, but the yellow part is more. The head is black, triangular, and is about 1.8 times wider than the length. It has 3 yellowish-white spots with yellowish-white margins. The side of the head is longer than the middle lobe, and it converges in front of the head. The side edges are light-colored, and the antennae are 5 knots. The black is shallow. Fine hairy, compound eyed reddish purple, dark black, up to the base of midfoot; front dorsum of dorsoventral concave; posterior margin straight, lateral margin straight and smooth, lateral blunt, with 6 dark spots, 2 before and 4 after, 4 after More than one spot merged into two large spots. Front edge, front edge, and mid-range "T" pattern, yellow-white. Small scutellum triangular, base with large dark spots, also triangular, with dark spots on both sides of the proximal end, the top orange-red. The outer edge of the front flap leather is light in color, with a small black spot in the middle, the diaphragm is black, and the edges are colorless. Feet yellow and black. Underneath the body, there are 2 small black spots in the center of each section of the abdomen. There are 1 small dark spot on both sides and the top corner of each section, and the side edges are yellow and black. Fifth instar nymphs body length 4.5-5.0mm, width 3.5-3.8mm, oval, mostly yellow pattern components; the first triangle; the outer edge of the lateral leaves black, each side of each with 1 yellow spots, more than black; Compound eyes, tentacles, black pods, and hind foot base segments; the front edge of the thoracodorsal plate is slightly concave, with dark spots near the sides. Small scutellum triangle, each with l yellow spots on both sides, more than black. The outer edges of the wing buds are pale and black, reaching the end of the third abdominal segment. The feet are yellowish and black, and are covered with light hair. The back of the abdomen is yellow to orange-red, and there are 1 pair of stink glands in the center of the abdomen at 4, 5, and 6 respectively. The abdomen was black at the end of the abdomen, yellow under the body, and each of the abdomen sections and the lateral margin had a large dark spot. Living habits Xinjiang is born 2-3 generations old, adults in the Tianbian or Tianzhuo weeds and fallen leaves over the winter, the following year in April the following year moved into the oil Laitian, vegetable fields. In mid-September, the second generation of adult and third-generation adults overwintered. The adult spawning site is related to the height of the host plant. The plant spawns on the ground and the plant height is mostly produced on the leaves or fruits. Eggs were gathered and laid flat, with 12 eggs per piece, 8 eggs, 10-11 grains in general, newly hatched nymphs often clustered around the eggshells, and 1 and 2 instars were clustered on the top leaves of plants, and dispersed after 3rd instar. The fourth and fifth instar nymphs and adults feed on the middle part of the plant. The adults of Inner Mongolia originated in June and entered the peak period from July to September. The fifth instar larvae appeared in August. Control methods (1) Winter plowing and clearing of vegetable plots can eliminate some overwintering adults. (2) Manual removal of egg masses. (3) Chemical control can be used to kill 210% of 2000-2000 times of emulsion oil or 2.5% of deltamethrin EC, and 2000 times of 50% of cyanocyanine EC. Hojicha Green Tea,Organic Hojicha,Organic Hojicha Tea,Organic Hojicha Powder SHAOXING ROYAL TEA VILLAGE CO.,LTD , https://www.yccmatcha.com