Scientific name Nezara viridula (Linnaeus) Hemiptera, Polygonaceae. Alias ​​rice green barley. Located in the south of Jilin in eastern China. There are more than 150 species of 32 families in the host, including rice, tomato, potato, cabbage, cabbage, and bean crops. Injury characteristics Adults and nymphs suck sap, affect crop growth and development, resulting in reduced production. Morphological characteristics Adult green full-form [forma typica (Linnaeus)] body length 12-16mm, width 6.0-8.5mm. Long oval, blue-green (darker adult dark red brown), lighter belly color. The head is near the triangle, antennae are 5 knots, the base section is yellow-green, and the ends of the 3rd, 4th, and 5th sections are brown, compound eyes are dark, and the eye is red. In section 4, it reaches the base of the hind foot and ends black. The edge of the prosthodontic plate is yellow-white, with rounded corners, slightly protruding. The small scutellum has a long triangle. The base has three horizontal white dots, and the end is narrow and exceeds the center of the abdomen. Forearm slightly longer than the end of the abdomen. Foot green, ganglion 3, gray brown, dark claw ends. Under the belly yellow-green or light green, dense yellow spots. Egg cup shape, length 1.2mm, width 0.8mm, the first production of yellow-white, after the reddish-brown, the top has a cover, the periphery is white, the hole is prominent ring, about 24-30. Nymphs of first-instar larvae have a body length of 1.1-1.4mm and a central dorsal aspect There are 3 dark spots arranged in a triangle, yellow brown in the late stage, an orange-yellow round spot on the chest, a long white spot on the 2nd abdominal segment, and 4 yellow spots on the central and 5 sides of the 5th and 6th abdominal segments. . The second instar larvae have a body length of 2.0-2.2mm, black, and a yellow spot on both sides of the anterior and midbrain dorsal plates. The third instar larvae have a body length of 4.0-4.2mm and are black. There are 4 long horizontal transverse white spots on the back of the 1st and 2nd abdominal segments, 6 on each side of the 3rd abdominal segment to the distal backplate, and 4 on the central side. Symmetrical white spots. The fourth instar larvae were 5.2-7.0 mm long, with inverted "T"-shaped dark spots on the head and pronounced wing buds. The 5th instar nymphs are 7.5-12mm long, greenish, antennae 4 nodes, monocular appearance, wing buds extending to the third abdominal section, prolapsed black spots on the front of the chest and wing buds, orange red on the outer edge, and semicircular on the abdomen The erythema, the center also has erythema, the foot is red and brown, the ganglion is black. Prevention and control methods (1) Remove the pastoral weeds in winter and eliminate some adults. (2) Light trapping adults. (3) Insect and nymphs are infested and sprayed with a broad-spectrum insecticide.
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Life habits occur in the north in 1 generation, in Sichuan and Jiangxi in 3 generations, in Guangdong in 4 generations, and in 5 generations. Adults weed in weeds, earth seams, and bushes. The starting temperature for the development of the eggs was 12.2°C, the nymphs were 11.6°C, and the effective development temperature was 668 days. Eggs are produced on the leaves of the host, regularly arranged in 3-9 rows, 60-70 pieces each. The 1-2 instar nymphs are clustered, and the nymphs and adults have a feign death. The adults have phototaxis and tropism. 
