Grasshoppers are plant-eaters, with a few species at times becoming serious pests of cereals, vegetables and pasture, especially when they swarm in their millions as locusts and destroy crops over wide areas. … Even in smaller numbers, the insects can be serious pests.

Are grasshoppers beneficial or pests?

Grasshoppers are beneficial and play a critical role in the environment by making it a more efficient place for plants and other animals to thrive. They facilitate a natural balance in the decomposing and regrowth process of plants.

Why is a grasshopper a pest?

North America has more than 600 species of grasshoppers. In Alberta, there are more than 85 species. … The species that are considered pests are economically important because under ideal food and weather conditions, these grasshoppers multiply quickly, and when present in large numbers, they feed excessively.