The yellow-spined moth is a genus of lepidoptera prickly moths. It is an omnivorous leaf-eating pest and is an important pest of forest belts, street trees, garden trees and fruit trees. So how to prevent it? Here's how:
[1] Morphological characteristics
Adults: body length 13 to 16 mm, wingspan 30 to 34 mm; head and thorax yellow, abdomen and dorsal yellow-brown; The inner half of the forewing is yellow and the outer half is brown, with two dark brown diagonal lines that converge at one point at the tip of the wing in an inverted "v" shape. The inner surface extends to the lower corner of the middle chamber, which is the dividing line between yellow and brown.
Eggs: oval, yellow-green.
Larvae: 16 to 25 mm long, small head, large chest and abdomen, rectangular, resembling a baby's shoes, yellow-green; The dorsal body has a large dumbbell-shaped purple-brown spot with a thick middle and two ends and many protruding branches.
Pupa: oval, 12 mm long, yellow-brown.
Cocoon: off-white, hard texture, the cocoon shell has several brown longitudinal stripes of different lengths, shaped like a finch egg
[2] Hazard characteristics
Young larvae nibble on the back of the leaf, and the larvae eat the leaves into a network after being slightly larger. As the insect age increases, it is scattered to eat, and the leaves are eaten into missing moments, leaving only the petiole and veins, and the heavy ones eat all the leaves.
[3] Prevention and control methods
1. Artificial control: strengthen the investigation of insect conditions, and artificially prune the wintering cocoon of serious plots.
2. Booby traps adult insects: combined with the prevention and control of other pests, use black light to trap adult insects.
3. Protect natural enemies: such as Shanghai green bee, thorn moth broad-shouldered wasp, praying mantis, beneficial bird, beneficial bug, scorpion enemy and Chinese star rifle armor.
4. Pharmaceutical control: In the early stage of pest occurrence, it is recommended to use Lin Fan Lin Insect Net or QiLin Royal Moth to dilute the medicine by 800-1000 times the liquid and spray it uniformly, and the control effect is better.
