Had a Tarantula Hawk (wasp) get into the rig one night. It didn't build a nest or anything but silly me not knowing what it was spent 5 minutes chasing it around and trying to squash it with various shoes and magazines. I finally won and didn't get stung but had I known it packs the second most painful sting of any insect I would have planned my attack a bit better.
http://www.desertusa.com/insects/tarantula-hawks.html