To the best of my knowledge winter moths would be emerging under leaf piles at the base of trees. You would also see them flying and hanging off of the sides of house and trees with the warm spell we have had here in Massachusetts. As for the piles of dirt. Hmmmm. Nightcrawlers? This is from this forum in 2007. Maybe you can get some info from it. Good Luck.
http://forums.gardenweb.com/forums/load/neweng/msg1113324628779.html

I don't think nightcrawlers come out in late November, do they? It's very strange. There's no tearing of the grass, which would be present if a skunk or squirrel were digging for grubs. It looks like someone beneath the ground has drilled upwards through the soil with a 1/2" bit.

I'm guessing worms. Is the soil warm enough that worms could be alive?

I think so. We haven't had a hard frost yet.
But wouldn't I see more worms during the summer months when the soil is much warmer? Maybe I should go out there at night with a flashlight and check.
Worms in the lawn is supposed to be a healthy sign.

I've got the same things in my yard. Do you have dogs?

It's just worms. They're just doing what they're supposed to do. Not to worry.

Al

I hope you're right. Why would worms come out now and not in the summer?

Greetings from Worcester. Go to the December 3rd online issue of the Boston Globe and search for (Mystery Pests).
There's a very informative article about the moths.

Yes, we've got the moths everywhere. I'm saving now for massive spraying next spring.
The article doesn't say the moths are responsible for the little piles of dirt on the lawn.