purplish stem borer

例句：

1. 1. The purple stem borer is a destructive pest that can damage crops.
   紫茎蛀果蛾是一种破坏性的害虫，可以损害农作物。
2. 2.The purple stem borer was found in the forest, causing significant damage to the trees.
   紫茎蛀果蛾在森林中被发现，对树木造成了严重的损害。
3. 3.The purple stem borer is a major threat to fruit and vegetable production in many regions.
   紫茎蛀果蛾是许多地区水果和蔬菜生产的严重威胁。