Adults hibernate, sometimes in groups.
Overwintered adults emerge in May to mate and lay eggs of the next generation, which flies from July-November before hibernating. Upland deciduous or coniferous forests. Rare migrants to Newfoundland, Nebraska, and Florida. This species is also found in temperate Eurasia. G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.