The Bible speaks of plagues of insects. These insects leave nothing behind, people starve. God sends these plagues when he thinks punishment for sins is due. He must have thought, "Oregon has a plague of homers. I'll send it a plague on grasshoppers. I hope you enjoy yourself, Oregon."
'Biblical' insect swarms spur Oregon push to fight pests (msn.com)
Isaiah 24:1-3 Behold, the LORD maketh the earth empty (2)...as the taker of usury, so with the giver of usury to him. (3) The land shall be utterly emptied, and utterly spoiled: for the LORD hath spoken his word.