What ever you do. Don't taunt them!!! Just kidding. they are 'mostly'
harmless unless
you are a tasty little bug or fly. They were most likely attracted to the
bugs
that were probably buzzing around your lantern. Next time toss a worm or
night crawler to them to see if they would eat it. I had a pet tarantula
when I was a kid and it loved earthworms and night crawlers.