Not that we've had too terribly cold weather so far, only some frosty nights, but everyone's insect sitings made me want to ask the list about my ladybugs. Every November thru January, they hatch out in droves. In the framework of my windowsills, around the edges of anything remotely still like the south side of the house. I think they've got future generations nestled in the insulation underneath somewhere. But why now? there isn't anything for them to eat, and it's too cold for them to be very active, yet year after year, they always do it.
I just now saw a very fresh (very large) snake skin so maybe their sole reason is to give the other cold blooded creatures something to feed on during the 'off season'.