Anthene definita, the common ciliate blue or common hairtail, is a butterfly of the family Lycaenidae.

Adults are on wing year-round in warmer areas, with a peak in summer.

[2] The larvae feed on Allophylus africanus, Pappea capensis, Mangifera indica, Myrica aethiopica, Myrica sericea, Acacia karroo, Acacia cyanophylla, Acacia saligna, Paraserianthus lophanta, Schotia, Bersama and Kalanchoe species.

The larvae are associated with ants of the genus Iridomyrmyx.

This Lycaenesthini-related article is a stub.