egghead

Spent a little time pulling vines this morning. Was feeling all proud of myself, and then I got inside and saw this:

That's a bite the size of a chicken egg on my forehead. And here I was feeling all pleased about the relatively low mosquito threat: normally by this time of the summer, after an hour outside I would be swarmed by them, bites all over. This morning I only had one bite on my arm, and (I thought) one particularly itchy one on my forehead. I thought having the goats clear all that brush, and then cleaning up junk around the yard, must have removed the mosquitoes' breeding ground.

Well it obviously wasn't a mosquito; what the hell was it? What makes a bite that big? Whatever it was, I'm sure it's gone. I would definitely have noticed another bite like that.