Exodus 10:4-5

4For if you refuse to let My people go, then hear this: tomorrow I will bring [migratory] locusts into your country.

5They shall cover the [visible] surface of the land, so that no one will be able to see the ground, and they will eat the rest of what has remained—that is, the vegetation left after the hail—and they will eat every one of your trees that grows in the field;