The scientific name is Clketus trigonus (Thunberg) and C. pugnator, both of which belong to the order Hemipteridae. Distributed in the Yangtze River Valley, Jiangsu, Henan, Yunnan, Guizhou and other provinces.
Host rice, amaranth, thorn wide, lotus seed grass, earth Nepeta, straw grapes, corn, soybeans and so on.
Damage characteristics, nymphs sucking rice and other juice or damage grass berries.
Morphological characteristics of the long-shouldered spiny beak adult body length 7.5-8.8mm, width 4-5mm; tentacles section 1-3 dark brown, equal length, dark brown brown section 4, the end of red color. The front half of the prosthodontic plate is light in color, and the lateral angles are protruding from both sides of the spines and are not upturned. The white spots in the inner corners of the black and leather flaps are clear. The scutellum was coarse at the moment, and the forefoot and midfoot base segments each had 2 small black spots, followed by a basal ganglion, light body color, 4 dark spots on the abdomen, and 2 small or inconspicuous spots in the middle. Eggs are near rhombic, white colostrum, yellowish afterwards, translucent. The last-instar nymphs were tan and brown, with small black lines on the back of the abdomen. The lateral angles of the anterior chest plate extended outward into needles, and the wing buds reached the posterior edge of the third abdominal segment. The short-shoulder spine tendons are similar to the long-shoulder spine tendons and their body lengths are all less than 9 mm. However, the short-shoulder spine tendons have short frontal and thoracic spine angles, and the width between the side corners is less than half of the body length and can be distinguished.
Living habits The Yangtze River Basin is 2 to 3 generations old, and adults spend their winters in litter or withered tussocks. They lay eggs between March and April of the following year. Eggs are produced on the leaves, ears or stems.
See the method of prevention and control of the edge of the rice spine.