Short sesame seeds
Scientific name Atractomorpha sinensis I.Boliva Orthoptera, Polygonaceae. Alias ​​China è—, pointed 蚱蜢 括, including the board. Distribution Gansu, Qinghai, Anhui, Hebei, Shanxi, Inner Mongolia, Shaanxi, Shandong, Jiangsu, Zhejiang, Hunan, Hubei, Fujian, Guangdong, Guangxi, Sichuan, Guizhou.
In addition to damaging sesame, hemp, rice, wheat, corn, tobacco, and cotton, the host also harms various vegetables, medicinal plants, and flowers such as sweet potatoes, sugarcane, cabbage, cabbage, radish, beans, eggplant, and potatoes.
The characteristics of adult insects and nymphs damage the leaves, affecting the growth of crops and reduce the value of crop commodities.
Morphological characteristics Adult body length 20-30mm, head to wing length 30-48mm. Green or brown (winter type). The tip of the head cuts, and the green-type self-recapitating eye has a pink pattern underneath the slant, which is in contact with the pink lines on the lower edges of both sides of the front and middle chest panels. The body surface has pale yellow knobs; the base of the hind wings is red and the ends are light green; the length of the fore wings exceeds about 1/3 of the hind leg end. Egg length 2.9-3.8mm, long oval, slightly concave in the middle, one end is more blunt, yellow-brown to dark yellow, the egg shell surface was scaly pattern. Eggs are arranged obliquely within the egg mass into 3 - 5 rows, and there are glued silk wrapped into oocysts. A total of 5 instar nymphs: 1 instar nymphs body length 3-5mm, grass green slightly yellow, brown, front and mid-foot, a number of brown rings, the body covered with granular protrusions; 2 instar nymph body color gradually turns green, before, Hindwing buds are discernible; the 3rd instar nymphs have a slightly concave and evenly curved dorsoventral plate, the wing buds are visible to the naked eye, and the anterior and posterior wing buds are not closed.
Covering half to all of the hindquarters; the center of the posterior edge of the 4th instar nymphs protrudes slightly backward, and the hind wings wing buds cover the forewing buds on the lateral side and begin to close on the back; the 5th instar nymph front protrudes rearward toward the rear Large, resembling adult, wing buds enlarged to cover the third quarter or slightly beyond the abdomen.
Living habits occur mostly in eastern China. One year in North China, two generations in Jiangxi Province, winter eggs in the ditch. From late May to mid-June, it is the hatching period and from July to August it becomes adult. There are many habitats on both sides of the irrigation canal where the habitat is plentiful, the humidity is high, and the dicotyledonous plant is dense.
Prevention methods (1) Agricultural prevention and control Short-term negative genital warts occur in severe areas. In the autumn and spring, the fields and weeds that are more than 5cm above the ground are eradicated, and the eggs are exposed to the ground for drying or freezing, and they can be thickened again. Increase the thickness of the cover soil so that the hatching can not be excavated. (2) On the basis of forecasting, catch the newly hatched earthworms in the field, and the channel ditches contaminate the dicotyledonous weeds and have very weak diffusion capacity. Each time 667m2 is sprayed with an enemy horse powder 1.5-2kg, 20% speed can also be used. Kill 15ml of diced EC and spray 400kg of water. (3) Protecting natural enemies such as sparrows, frogs and major parasites for biological control.
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