Nearly identical to the Summer Azure (Celastrina neglecta), which was formerly lumped with them, these common butterflies don't fly during the summer. However, a small number of Summer Azures do fly during the spring, so you can't assume any spring azure is a Spring Azure. Spring Azures are very similar to Summer Azures, but are slightly smaller and are more of a violet-blue above.

Durham Co., NC 4/3/05.