It does appear to me that "krw" was talking about a few species of grasshoppers in the family "acrididae" being "the usual locusts" that migrate in plagues to eat every green farm plant for at least a mile around.
Though I have heard of cicadas mentioned as above, that is a distant secondary usage of referring to a non-grasshopper insect as a locust.
Every locust in the Bible was a grasshopper.
What does this have to do with insects?