There are holes in the trunk of Lagerstroemia indica. What bug is asking the expert? How to prevent it?

Apriona germari larvae can be sprayed with beta-cypermethrin on the trunk, and silicone is better. The time of application is critical, and it is best to lay eggs just in the trunk. The high-efficiency cypermethrin produced by some manufacturers contains insect attractants, which have good effects, and are generally the kind that kills underground pests. General pesticides for adults, such as emamectin benzoate series, avermectin series and pyrethroid pesticides, can be used.