Grasshoppers are consumers because they are animals. All animals are consumers because they have to eat producers or other consumers. In contrast, plants are producers because they create their own food with the aid of the sun.
When grasshoppers are young, they are called nymphs. As nymphs, they eat tender plants, clover, fresh shoots, grass and other small plants. As they grow older, they go through a process called "molting" and begin eating tougher plants and grass. Grasshoppers are primary consumers because they eat plants, or producers, as opposed to other consumers. Grasshoppers are insects, which are a subgroup of animals, and they are part of the suborder Caelifera and the order Orthoptera.