Tea deer moth Amata germana Felden, also known as deer moth. It belongs to lepidoptera, family Mothidae.
【Host】Fruit trees such as lychee and longan.
【Pest】The larvae are harmful to the young leaves of the new shoots, so that the leaves are absent.
【Morphological characteristics】 Adult insects have a body length of 8 to 10 mm and a wingspan of 20 to 25 mm; the head is black, there are 2 orange-yellow hairs on it, the thorax and abdomen are yellowish brown, the abdomen has a black ring pattern at each section, and the forewings are long triangular, black, with 5 transparent spots. Egg Oval, white. The larvae are 10 to 20 mm long, the head is reddish brown, with white fine hairs; the body is black, densely covered with short black hairs, which are villi-like, and there are 5 pairs of raw black sarcoma on the dorsal side of each body node, divided into 2 rows, 1 pair in the front, 4 pairs in the back row, and more than 20 hairs on each tumor, with white fine hairs on it. Pupae are yellowish brown and later turn dark brown.
【Life habits】2 generations a year occur, one generation in the spring flowering period for the lychee spring shoots young leaves, adult insects to eat nectar, the second generation of larvae about June for the pest of starfruit buds. The larvae are pests of weeds from July to September. Adults often rest between leaves during the day, and female moths lay eggs on the back of old leaves, with oval-shaped egg blocks, each with dozens of eggs. The larvae hatch and disperse into pest adult and old leaves. When the larvae are ripe, they spit out a small amount of silk to slightly connect the leaves and pupate into them. Adults are phototropic.
【Control method】Control with reference to the coarse shin green ruler moth. (1) Clear the garden in winter, cut off insect pest branches, control the winter shoots, block its food source, and reduce the source of overwintering insects. (2) Use adult insects to have phototropism, and use black or blue light lamps to trap them. (3) Spray control at a young age of the larvae. Optional pesticides: 4.5% high-efficiency cypermethrin emulsion 1000~1500 times liquid, 2.5% cypermethrin (enemy killing) emulsion 1000~1500 times liquid, 2.5% high-efficiency cypermethrin (kung fu) emulsion 1000 ~1500 times liquid, Thuringiensis (Bt) wettable powder or emulsion 600 to 800 times liquid, or add 10% cypermethrin emulsion, 90% dimethoate crystals 1000 ~ 1500 times liquid prevention effect is better. In areas with strong drug resistance, 1.8% avermectin microemulsion 1000 to 1500 times liquid, 2% methylamino avermectin benzoate emulsion 1500 to 2000 times liquid or 5% chlorphenoxybenzoamide suspension 1000 times liquid spray can be used.