Phelsuma kely is a species of diurnal gecko which lives on the central east coast of Madagascar, south of Tamatave. It typically inhabits dragon trees. The gecko feeds on insects and probably nectar. It is the smallest known day gecko, reaching a total length of about 7.1 cm. Its body colour is variable and dependent on the mood of the animal. During activity, the basic body colour is white-gray with a black pattern on the back. However, the body colour can turn dark also. A black lateral stripe extends from the eye to the tail. The ventral side is grayish-white.