I found Falcate Orangetips regularly this spring in an area where I regularly hike. The orange is difficult to see at a distance and they look a lot like Cabbage Whites, but smaller. I've come across two mating pairs and was lucky enough to get a few shots of their behavior.
Here the female at the bottom is perched on a chickweed flower and the male has just made a close pass at her.
They fly mainly in the southeastern United States, with one brood in early spring.
April 7, 2012, Madison Run Fire Road, Shenandoah National Park, Rockingham County, Virginia.