The main content is about how pea elephants help humans, highlighting the characteristics of pea elephants that can satisfy humans.

The author integrates the colorful life of insects with his own life insights, and looks at insects with human nature. Every line reveals the author's respect and love for life.

The bean weevil is an important pest of many kinds of beans and other legumes. The larvae feed inside the beans and cause serious damage to the stored edible beans. Once introduced, it will cause heavy losses to China's bean production and also have a serious impact on bean exports. China has classified it as a hazardous pest under external quarantine and is strictly preventing the insect from being introduced into the country.

Living environment

The field ecological conditions in the Yanbian area are completely suitable for the growth and development of the common bean elephant, especially the area along the river has more suitable temperature and humidity conditions. According to the experimental observation results, most bean weevils in caged fields can develop from laying eggs to mature larvae or pupae, and a small number of them can emerge as adults, and then enter indoor storage for reproduction along with the harvest of beans.

It overwinters as mature larvae or pupae in warehouses and cannot overwinter in the field. Because the eggs of Phaseolus vulgaris are not sticky, they are rarely laid inside the cracked pod or in the outer wrinkles. Mainly, adults use their mouthparts to bite a slit or small hole on the inner abdominal line of mature or nearly mature pods, and then extend their ovipositor into the slit to lay eggs, which can reduce the loss rate of eggs.