If you want the control effect of the large-leaf boxwood moth to be good, you must work hard in these aspects!

Large-leaf boxwood is the most common plant in our garden plant greening, because of its strong hardiness, long green period, so it is widely planted, but in recent years, it has been found that a leaf-eating pest often appears on the large-leaf boxwood to harm the large-leaf boxwood, which is observed to be caused by the lepidoptera, so how to do a good job in the prevention and control of the large-leaf boxwood moth, you need to understand clearly from the following points, before you can start to manage.

[1] Hazard characteristics of the large-leaved boxwood moth

The large-leaved boxwood spot belongs to the genus Lepidoptera, the family Mothidae. It is found in Shanghai, Nanjing, Wuxi, Suzhou, Hangzhou, Wuhan, Lianyungang and Hefei. It harms the large-leaved boxwood, silver-edged boxwood, golden-hearted holly guard spear, large flower guard spear, fufang vine and silk cotton wood. The larvae feed on the host leaf, and when it is serious, the leaf will be eaten lightly, the amount of food is very large, and it is easy to cause the entire leaf to be eaten by this moth, and even due to the obstruction of photosynthesis, it will cause the leaves of the large-leaf boxwood to turn yellow, causing death. It has a great impact on the normal growth of plants.

[2] Identification of the large-leaf boxwood moth

Adults are flattened and rounded , with a black dorsal back , long yellow hairs on the sides of the thorax and abdomen , and a yellow belly. The forewings are pale greyish-black, slightly transparent, with a base 1/3 light yellow. The hindwings are half the size of the forewings and are slightly paler. Oval oval. The larvae are about 15 mm long when mature, have a yellow-green abdomen, and have ∧-shaped black markings on the dorsal plate of the forebreast. There are 7 longitudinal bands on the back of the body, and there are hairs and short hairs on the surface of the body. The pupa is yellowish brown with 7 inconspicuous longitudinal stripes on the surface and 2 gluteal spines.

[3] Occurrence of large-leaved boxwood moth

One generation occurs a year in East China. From the end of March to the beginning of April of the following year, the eggs hatch, the larvae have a habit of clustering, and the larvae mature from the end of April to the beginning of May, form cocoons in the shallow soil and pupate, and pupate over the summer. In early November, the adults feather and lay eggs after mating, where they lay on the branches and overwinter with their eggs.

[4] Prevention and control measures

1. Pharmaceutical control: you can use tree insects once net or widely diluted with water during the insect infestation larval stage for spray control.

2. Manual removal. Since most of the overwintering eggs are attached to the top of the fresh branches of the year, the green belt can be prevented with pruning before winter every year, cutting off the branches with eggs, eliminating insect eggs, and reducing the pest base in the next year.

3. Physical control: Since adults belong to Lepidoptera and have phototropism, they can use black light lamps to trap adult insects.