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Identification and control methods of the licorice seed weevil
Morphological characteristics: The adult is oval, brown or dark brown, with a body length of 2.5-3mm and a width of 1.5-1.8mm; the antennae are broad and short, serrate, and do not reach the base of the elytra. The pronotum is covered with punctures and dense light brown hairs, and its posterior margin is as wide as the elytra. The elytra are covered with punctures and dense light brown hairs. The pygidium is long, slightly pointed at the tip, and the ventral surface is covered with dense light brown hairs. The inner margin of the hind femur has 1 small, indistinct tubercle near the tip; the inner margin of the hind tibia has 1 long tooth at the tip; the first segment of the hind tarsus is the longest. Damaged crop: licorice. Damage symptoms: main
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What are the control methods for the ginseng large gray weevil?
The large gray weevil, also known as the snout beetle or "tula lv", has an adult body length of 9-12 mm, grayish-yellow or grayish-black, densely covered with grayish-white scales. The head and rostrum are densely covered with golden shiny scales. The pests occurring this year mainly feed on tender stems and leaves on the soil surface during the seedling emergence period, causing great damage. When disturbed, they feign death and drop to the ground, causing damage in the early morning and evening....
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