Wood beetle moth is a serious damage to the garden dry moth, the harm to more types of trees, severe branches will be damaged by pests hollow. Coupled with the action of rain and bacteria, the wood is easy to rot hollow, for the control of wood beetle moths, there are two key periods of late spring and late summer!
[1] Identification characteristics of wood beetle moth:
Adults are medium to large moths with small heads and degenerated or absent beaks. The antennae are usually double-chestnutd and rarely filamentous; Some species of males have antennae with double ctenophores at the base and filaments at the ends. Males and females are similar, generally grayish-brown. The wings are decorated with scales or hairs and have many broken lines. The larvae are coarse, mostly red, and the dorsal and rump plates of the forebreast are manywhat pigmented, which can be used to identify species. Pupae are moving pupae with 1-2 rows of serrated or pointed teeth on each dorsal link.
【2】Hazard characteristics of wood beetle moth:
The first larvae like to cluster and invade the wound as a pest, initially invading the subcutaneous phloem, gradually invading the sapwood, eating the subcutaneous part into pieces, and then dispersing to the heartwood part of the moth, entering the dry, and completing the larval development stage in it. The stem is mothed into countless interconnected channels.
【3】Occurrence and harm law:
This worm occurs in 2 generations (spanning 3 years). Larvae overwinter in the branches of the moth. In March of the following year, the larvae begin to recover. The larval activity period is from March to October, and adult insects mostly appear in April and July, and can be as late as October. Because the insect has different generations, whether it is a pest period or a wintering larvae, there are larvae of various insect ages, especially the four insect states of the wood beetle moth from June to August, so it brings certain difficulties to the control work.
【4】Key technologies for the control of wood beetle moth:
The two key periods of late spring and late summer are usually selected, and the appropriate periods for prevention and control are March-May and September-October. Because the insect state is relatively neat at this time, it is conducive to prevention and control:
1, larval spray dry control: use Cheng Tapping package (1 bottle Cheng Tapping + 2 bottles of Royal Moth) with 15 kg of water to spray the trunk, the spray range is 2 meters from the ground.
2, adult pest control: the use of Guangzheng mixed with 300 pounds of water for spray control, the effective period of 50-60 days.
