The summer azure butterfly (Celestrina neglecta) is a small, lilac-blue butterfly with a paler underside. It has a wingspan of 3/4 to 1 1/8 inch (2-2.75 cm). Its upper surface is pale blue with an extensive dusting of white scales, especially on the hindwing. In some females the blue is almost entirely replaced by white with a small amount of blue near the wing bases. Females have a broad blackish-grey band on the outer third and costa of the forewing. The underside is chalky white to pale grey with tiny dark grey spots and a zigzagged submarginal line on the hindwing. The butterfly lives in open areas and grassy fields, and it sips clover nectar. It is found in most of eastern North America. The summer azure is the palest of the Azure butterflies. It was named by Edwards in 1862. It belongs to the family of Lycaenidae.