This, we believe, is The Bride, or Catocala neogama. We have most definitely entered Catocala season now as several species of underwings have come to the lights lately. This one, caught on August 5th, however, was the most specacular.

The Bride is a fairly large underwing, with a wingspan of 2.5-3.5 inches. Its caterpillars feed on hickory, butternut, and walnut trees.