Deuteronomy 14:19 "And every creeping thing that flies is unclean to you: they shall not be eaten"

Most flying insects such as flies, bees, and hornets are not kosher and we are forbidden to eat them. In regard to locusts and grasshoppers, the Torah gives specific signs which we must look for, (see Positive Mitzvah 151). If they have these signs - we may eat them.