Revelation 9:3-5

3Then out of the smoke locusts came upon the earth. And to them was given power, as the scorpions of the earth have power.

4They were commanded not to harm the grass of the earth, or any green thing, or any tree, but only those men who do not have the seal of God on their foreheads.

5And they were not given authority to kill them, but to torment them for five months. Their torment was like the torment of a scorpion when it strikes a man.