armyworm
/ˈɑːrmiˌwɜːrm/
noun
- A type of caterpillar that moves in large groups and destroys crops and plants.
- Gardeners often use natural predators to control armyworm populations.
- The farmer lost half his cornfield to an armyworm infestation.
- Armyworms can strip a field of grass in just a few days.
- Any of several moth species whose larvae behave in this destructive, group-moving way.
- The fall armyworm is a major pest in many parts of the world.
- Scientists are studying the migration patterns of the African armyworm.
- Some armyworm species can travel long distances as adult moths.