I hope someone can help I have been trying to find this film for a while now but can't remember what its called. All I can remember is its got bugs in it that start fires from there butts all over a little US town and I think they came out of the ground after an earthquake so I hope someone can help

I believe it may be the aptly-named Bug (http://www.imdb.com/title/tt0072750/) from 1975.

Thanks that help a lot I have tried everything to find that film