Okay, technically they are cicadas, but they look like what I imagine locusts would be. They come on a 17 year cycle, and since their last emergence was 2004, so it's on for this year.
They'll be swarming all over the east coast this spring, we suggest you check out the full details at cicadamania (because of course cicadas have their own website!).
I’ve always been jealous that the East and Central have fireflies.
Now I have to add cicadas to the mix.