Cassius Blue (Leptotes cassius cassioides)
One of three species of small blue butterflies that may be present on the island, it is very similar to the hanno blue (Hemiargus h. hanno) and the Miami blue (Cyclargus thomasi woodruffi). The hanno blue has only one dark spot at the bottom of the lower wing, while the Miami blue has two, but also has additional dark spots in the middle of the lower wing. It is impossible to distinguish them without close examination. All three are seen on scrubby hillsides or open fields.