Xanthodes graellsi Feisthamel Lepidoptera. Alias ​​pyrosome yellow moth. The distribution ranges from Shandong, Hebei, and Shaanxi in the north to Taiwan, Guangdong, Guangxi, Yunnan, and Tibet in the south. Host cotton, mallow, sunflower, ramie, sunflower and so on. Injury characteristics: 1, 2nd instar larvae eat leafy meat, 3rd and 4th instar eat leaves become incomplete moments, 5, 6 instars eat leafy leaves remaining veins, injure leaves, bracts and flowers. Fizzy Bath Bombs,Bath Bomb,Healcier Oem Bath-Bomb,Nail Buffer Hota Dongguan Vanilla Bioengineering Co., Ltd. , https://www.healthecigarette.de
Morphological characteristics Adult body length 16-19mm, wingspan about 40mm. Head, chest pink white, yellow. Fore wings yellow. Sub-baselines, lateral lines, sub-peripheral lines are brown and faintly visible; the hind wings are light yellow, the baseline is silver gray, and the marginal hair is gray-brown. Egg length 0.6mm, orange petal-shaped, slightly concave at the top, the upper radial stripes. The last instar larvae are 24-30mm long, light yellow to green or blue, 1, 2 pairs of gastropods are degraded, the head is orange, with red or blue markings on both sides, and the back line is yellowish-white in width, each body section 1,2 The hairs are dark brown and form dark spots on the back. There are 1 dark brown stripes between the 1 and 2 lumbar vertebrae. The dragonfly is 14-17mm long and brown.
Life habits Huazhong Cotton Area is 3-4 generations old, 4 generations in Hubei Puyang, and the winter is over. In early May of the following year, the overwintering adults fly into the cotton field to lay eggs and enter the larvae during the middle and late June. In the middle and early July, the second generation of adult oviposition peaks, and the second generation of larvae enters the period from July to early August. In late August and mid-September, three- and four-generation larvae have been infested and their generations overlap. Adults hide during the day, like to feather in the evening, 2-3 days after the beginning of spawning, each female can lay more than 2,000 eggs, the eggs produced in cotton leaves. The adult spawning period encountered heavy rainfall, high humidity, and high egg production. The temperature is 25-29°C and the relative humidity is 80%. A well-cooked cotton field occurred early, and the previous damage was heavy; the two ripe cotton fields occurred late, and later the damage was heavy. There are large amounts of ramie and sunflower growing near the cotton fields.
Control methods (1) This pest can be treated concurrently with other cotton worms. (2) Occurrence of heavy cotton areas, in the hatching period of eggs or larvae during the 1st and 2nd instar stages, spray 80% crystals of trichlorfon 800 times or 50% ikaksei 1500 times, 50% parathion EC 2000 Times of liquid, 50% phoxim EC 1500 times.