Control of mango green thorn moth

1. Taxonomic status: mango green diamondback moth, also known as ParasaconsociaWalker, belongs to Lepidoptera and Cephalidae in classification.

2. Hosts and harmful characteristics are widespread, harming mango, banana, citrus, peach, plum, persimmon, chestnut, cherry, apple, pear, cherry, willow and other fruit trees and trees. It is harmful to the larvae to bite the leaves. The young larvae feed on the mesophyll, leaving only the epidermis; the old worms eat the leaves into holes or lacerations, and even eat up the whole leaves, leaving only the petiole, seriously affecting the tree potential. The human body accidentally touches its branched poisonous hair and causes hot pain, redness and swelling.

3. The morphological and habitual adults are medium-sized large green moths with a body length of about 16 mm and a wingspan of about 36 mm. The last instar larvae are about 25 mm long, flat cylindrical and green, with tufts of bristles (poisonous hairs) in the carcass segments. Two or three generations occur every year in Jiangxi, overwintering with mature larvae on the branches or in the soil around the base of the trunk. The adults lie out at night and have phototaxis. The eggs are laid on the back of the leaves near the main vein, and the eggs are arranged into fish scale-like egg blocks. The newly hatched larvae were clustered and scattered after the 3rd instar.

4. Control methods (1) spraying poison to kill young larvae. The medicament can be alternately sprayed with 1000 times of 90% trichlorfon crystal, 50% fenitrothion, malathion and phoxim EC, 80% dichlorvos EC 1000-1500 times, 20% fenvalerate, 10% cypermethrin, 2.5% deltamethrin 6000-8000 times. (2) Light traps and kills adults. (3) cleaning the countryside, collecting litter and burning, properly cultivating and loosing soil to worsen the environment of overwintering, pupation and Eclosion of larvae.