The crape myrtle, green tailed silkworm moth, is also known as the water moth, the swallowtail moth and the long-tailed moth and belongs to the order of the big silk moth, Thysanoptera. It is distributed in most of the provinces and cities such as North China, Central China, East China, and Southwest China. Harmful to a variety of fruit trees and garden seedlings. Second, the hazard characteristics Damaged by larval feeding leaves, the young larvae eat the leaves as nicks or holes, and when they are slightly larger, they eat up the entire leaf, leaving only petiole or coarse veins. Third, control methods 1, artificially killing the green tail large silk moth overwintering is very large, easy to kill by hand. Older larvae can be as long as 80mm, strong resistance and surprising amount of food, chemical control is more difficult, you can take the method of artificial capture. 2. Chemical control The chemical prevention should pay attention to early detection and early prevention, and ensure that the drug is used before the larvae are 3rd instar; spray 50% of the pine oil EC 800 times, or 80% of the dichlorvos EC 1000 times, or 90%. Crystalline trichlorfon 1000 times, or 2.5% deltamethrin EC 3000 times solution. Mahi Mahi,Mahi Mahi Fish,Mahi Mahi Fillets,Frozen Fish Fillets Mahi Mahi Zhejiang Zhoushan Jiaze Aquatic Co., Ltd. , https://www.tianjia-aquatics.com
First, the morphological characteristics Adult body length 35-40mm, 122mm wingspan; body surface with deep white hair, wings greenish pink, forearm by the front chest purple brown, central wing has a wing-like markings, hind tail caudal protrusion, length 40mm. Ovoid slightly flat, 2mm long, grayish brown. Larvae can be up to about 80mm, yellow-green, nodules body segments, with 4 in the middle and posterior thoracic and eighth abdominal section on the back of a large, brown and white long hair on the knobs. Carcass length 45-50mm, auburn, with a light spot in the frontal area. Eggs are oval, grayish yellow or gray-brown.
In Tianshui, it can take 2 generations in 1 year, and it is usually done on branches. Larvae hatch in the middle of May. Larvae were 5 instars and lasted 36-44 days. The mature larvae began to phlegm in early June and reached their peak in mid-range. Duration is 15-20 days. The first generation of adults emerged from late June to early July. The larvae hatched in early July, and by the end of September, the mature larvae were pupa. Overwintering is 6 months.
Prevention and Control of Lagerstroemia Indica Larvae of Green Silkworm