The Sleepy Orange (Eurema nicippe) is a mostly yellow sulphur species with vibrant orange forewings, variable brown striping and sprinkling on most of the ventral side. The overall wing shape is much more rounded than other similar sulphurs like the Orange Sulphur. When in flight the orange looks almost fluorescent and can be used to id Sleepy Oranges though some Orange Sulphurs are also very bold orange and much more common.