On the northern Great Plains, the following five grasshopper species are likely to become important crop pests. Early monitoring of crops for feeding damage usually provides enough information to make sound control decisions. Twostriped Grasshoppers are normally the first grasshoppers to hatch in Minnesota in early May and June.
Adults are grayish or brownish green and have two distinct yellow strips from head to wing.
Nymphs begin hatching in early May and are present through early July. Migratory Grasshoppers are about 1 inch long, brown to gray with a distinctive black streak behind its eye. They have a slight hump behind the spine on their underside, between the middle legs. They are strong flyers. They are light tan to brownish and have clear wings with large brown spots.