The pest in the photo is an ancient poison moth, which I photographed in Japan. It has a very heterogeneous diet and harms flowers, trees and a variety of fruit trees.
In China, the hatching larvae like to eat the leaf flesh on the back of the leaf cluster, leaving the upper epidermis; the 2nd instar begins to disperse the activity, mothing from the base of the bud into a hole, so that the bud dies; the young leaves are often eaten, leaving only the petiole; the leaves are eaten into missing and holes, leaving only coarse veins in severe cases.
The ancient poison moth occurs in 2 generations per year. Overwinters with eggs on thin cocoons in trunks and bark slits. Hatching in mid-June, late June is the peak of the first generation of larvae, adults are feathered in mid-July, second-generation eggs hatch in early to late July, and the second generation of larvae is infested in mid-August. Adults feather from early August to late August and early September, overwintering as eggs on the cocoons of female adults feathered from branches or bark. The young larvae only peel off the leaf flesh to leave the veins, and can eat the whole leaf after 3 years. 1 to 2 instar larvae can spit silk drooping, and spread to other trees by wind, and the propagation distance can reach tens of meters. After the larvae mature, they look for a suitable place to spit silk to make a thin cocoon pupa. Male adults are phototropic.
Learn more technology, please pay attention to today's headline agricultural science gathering 888, I have been engaged in professional 50 years, senior technical positions, was hired as a Chinese vegetable industry think tank expert, China's northern vegetable fruit tree expert, Ningxia Wuzhong City facility agriculture chief expert.