When I was up visiting my parents for Father's day, there were a ton of these little bugs everywhere. They're called cicadas.
They hatch once every seventeen years for about three weeks. They cover the sidewalks, trees, cars, everything. I walked with my dad to the local park, and one even flew on me. They are pretty ugly. They make a ton of noise as well - during the day it's hard to hear yourself think.
They lay their eggs around trees. So the suburbs that have older trees typically have more cicadas.
The cicadas must be incredibly optimistic. They are alive for one day, laying eggs, assuming that the world will still be the same seventeen years from now.
I remember the cicadas from seventeen years ago - I was a freshman about to go to high school. It's always interesting to look back and realize (cliche) that as much as things change, they also stay the same.