Scientific name Eterusia aedea Linnaeus Lepidoptera, Moth family. Alias ​​tea spot moth. Distributed in Zhejiang, Jiangsu, Anhui, Jiangxi, Fujian, Taiwan, Hunan, Guangdong, Hainan, Sichuan, Guizhou, and Yunnan.
Host tea tree, camellia, crimson, etc.
The larvae gnaw on the leaves, and the young larvae only eat the lower epidermis and mesophyll, leaving the upper epidermis forming a translucent yellowish film. The growing larvae eat the leaves as nicks, and when they are severe, they eat all the leaves and leave only the main veins and petioles. Morphological characteristics Adult body length 17-20mm, wings 56-66mm. The male moth antennae have a double dentate dentition; the antennae of the female moth are filiform at the base and the upper part is dentate, with a bulging end and thick like a rod. The head, chest, base and wings of the abdomen are all black, slightly blue, and satin-like sheen. The head to the second abdomen is shiny black and black. There were several yellow-white patches on the base of the forehead, and the middle yellow-white patch was connected with a horizontal band, and 11 plaques were scattered on the mid-lateral side; the yellow-white transverse band in the middle of the hind wings was very wide, and there were also scattered yellow-white spots near the outer edge. Piece. Egg oval, bright yellow, turn grayish brown when hatching. The growth larvae are 20-30mm long and resemble pineapple in shape. Tawny, hypertrophic, multinodular process, with 5 pairs of tumors on the back and back of the chest, 3 pairs of tumors on 1-8 sections of the abdomen, and 2 pairs of tumors on the 9th section. hair. About 20mm long, yellow-brown. Brown, oval.
Living habits Anhui, Jiangxi, Guizhou, born 2 generations, with mature larvae in November after the tea in the base part of the right or under the dead leaves, soil gap overwintering. In the middle and late March of the following year, the temperature rises and the tree is fed. In mid-April and late-April, cocooning and pupa are started. Adults lay eggs from mid-May to mid-June. The first generation larvae emerged from early June to early August, from early August to late September, from the middle of September to mid-October. The first generation of larvae spawned and the second generation of larvae began to occur in early October. The egg period is 7-10 days; the larval period is 65-75 days, the second generation is about 7 months; the flood period is 24-32 days; the adult life is 7-10 days. Adults lively, good fly, phototaxis. The adult has an offensive odor. After being frightened, the antennae swing and the mouth spits bubbles. Both night and day activities, mostly in the early evening on the tree path around the tea garden. One to two days after mating, male and female, spawning, 3-5 days after the end of production, eggs piled on the tea tree or other nearby branches of trees, each pile of dozens to hundreds of grains, 200 to 300 eggs per female. Female moths are more numerous than male moths. Most of the newly hatched larvae clustered on the back of the lower part of the tea tree or on the back of the leaves, gradually dispersed after the 2nd instar, and they took leaves in the lower part of the tea bush. The larvae are sluggish, and after being frightened, the body's dorsal nodule can secrete clear mucus but it is non-toxic. After being cooked, the old leaves are spinning in the front of the old leaf, and the knots turn into phlegm.
See control methods for tea silkworms.
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