I did a brew last night (Vienna Lager) with a bunch of swarming insects--definitely got a few in my kettle. Fortunately, it was a no-chill batch, so I hope the wort was hot enough that there won't be any issues.
Frikin Nasty Beast. Amazing how they come out and swarm around your fresh wort at night. I hope it works out better for you then it did for me.