Butterflies Occurring in the DC Area
by Richard H. Smith
| Species | Occurrence Level | Flight Time |
|---|---|---|
| Checkered White | Rare | June, Sept. |
| Cabbage White | Abundant | March through October |
| Falcate Orangetip | Uncommon, Specialized Habitat | April, May |
| Clouded Sulphur | Abundant | March through November |
| Orange Sulphur | Abundant | March through November |
| Cloudless Sulphur | Rare | Sept. |
| Little Yellow | Rare | Aug., Sept. |
| Sleepy Orange | Rare | Sept. |