Pol Cosmo has been pasting insects (and sometimes other animals) in the streets for the last 3 years. It all started very small, but has grown very quickly. You can ask him to visit and pimp your house, he has t-shirts and other stuff. If you want to see these bugs, keep your eyes open. They come, fade and go all the time. If you spot some, you're lucky. On this location there are some, but they are spread all over town.