Beware of this blue beetle hazard in willow trees

Willow tree is a widely planted garden plant in China, in the maintenance of willow trees, there is a pest called willow blue leaf beetle, in order to adult, larvae to feed on the leaves into missing or holes, the garden needs special attention and prevention!

【1】Identification characteristics of willow blue leaf nail:

Adult: nearly round, dark blue, metallic luster, broad head, 6 antennae, small base, thick remaining segments, brown to dark brown, fine hairs on the upper parts; the dorsal plate of the forebreast is broad and smooth. The elytra are densely packed with fine dots in rows, and the ventral surface and foot color are dark and shiny.

Larvae: about 6 mm long, gray-brown, with black-brown bumps all over the body, a broad thorax, 4 dark spots on each segment of the back of the body, and papillae on both sides.

【2】Occurrence law and harm:

Henan has 4-5 generations per year and Beijing 5-6 generations, and adults overwinter in the soil, deciduous and weedy bushes. In April of the following year, when the willow tree sprouts, it comes out to be active, to harm the buds and leaves, and lay the eggs on the leaves, arranged in piles, the hatching larvae are clustered as pests, nibbling on the leaf flesh, the larval stage is about 10 days, the old mature larvae pupate on the leaves, and the adult and larvae can be seen at the same time in mid-September, and there is a suspended death.

【3】Prevention and control methods:

When it is found that the willow blue leaf nail is harmful, it can be sprayed with 300 pounds of water in 1 bottle of Qilin Guangzheng.