Longan butterfly Lycaenidae sp., also known as the glass butterfly. It belongs to lepidoptera, Grey Butterfly family.
【Host】Longan, lychee and other fruit trees.
[Harmful] The larvae bite the young leaves of the dragon's eye, causing a lack of moments.
【Morphological characteristics】 Adult insects Spread their wings 24~35mm, the black edge of the outer edge of the male forewing is thinner, the middle is aqua blue, the blue glass luster is lighter, the ventral surface of the wing is white, the outer edge has black dot arrangement, the sub-outer edge has wavy markings, and many black spots are scattered on the front and back wings. The outer edge of the upper wing of the female butterfly is larger, the outer edge of the upper wing is wider, the middle of the wing is also freshwater cyan, the blue glass luster is stronger, the sub-edge of the hindwing is wavy and disconnected, and the near outer edge has a white eyebrow pattern. The ventral surface spots of the wings are small, the spots on the sub-outer edge of the upper wings are arranged in a regular arc, and the spots on the hindwings are about the same size. The larvae are flattened and round, yellow-green to pale red, with a small head, retracted into the chest, and protruding when feeding. Pupae are slightly smaller in the upper part of the short cylindrical shape and reddish-white on the back with brown spots.
【Living habits】Generally distributed in low, medium and high altitude areas, 3 generations a year occur, adult insects appear in February to June and September to December, and are commonly absorbed and flying in wet water.
【Prevention and control method】Master the spraying at the young leaf stage, and the selection of the agent refers to the control of the lychee butterfly. (1) Remove the insect fruit and hook the pupae at the crack in the bark. (2) Spray 10 days after the flower, and spray again every 15 days. Agent options: 80% dichlorvos emulsion, 90% dichlorvos crystal 800 to 1000 times liquid, 4.5% high efficiency cypermethrin emulsion, 2.5% kung fu emulsion 1000 to 1500 times liquid, etc.