Small beetle pests are widely distributed and numerous, often in dense flocks in the forest, and moths eat bark or trunks for life, causing trees to weaken or quickly die. To this end, Xiaobian has compiled an article on the control measures of small beetle pests.
[1] Morphological characteristics
The insect body is tiny, 1 to 9 mm long, dark brown. The antennae are bent in a knee-shaped manner, and the 3 segments at the end are enlarged to form a hammer-like part; the external pharyngeal tablet disappears, leaving only 1 external pharyngeal slit; there is no upper lip; the lower jaw is 3 segments, and the internodes are stiff and inactive; the 5 segments of the foot tarsal segment, of which the 4th segment is very small, becomes a false 4 segments; the wing vein is simplified. Beakless; the foot is dry and flattened, with teeth on the outer edge of the tibial segment, or a spine at the end of the tibial segment that curves inward towards the stem; there is a well-developed chitin anterior stomach.
[2] Occurrence law
Generations vary from species to species, with adult moths forming layers and xylems, forming slender, curved tunnels. Females mate their tails in the tunnel and lay eggs in them. The summer is a serious occurrence of the year.
[3] Prevention and control methods
1. Combined with pruning, timely clean up the branches of insect pests and reduce the source of insects.
2. Strengthen cultivation and enhance tree potential.
3. Pharmaceutical control: Before the occurrence of pests or juvenile stage, it is recommended to use Lin Fan moth net or Yong Fan, at the base of the trunk or near the bottom of the fresh excrement hole, and then unscrew the bottle cap, remove the aluminum foil film sealing film, and then cut off the top of the donated cannula and then screw it directly into the bottle to insert the drill hole for instillation.
