Cacyreus tespis, the water bronze or water blue, is a butterfly of the family Lycaenidae. It is found from South Africa to Ethiopia.
The wingspan is 15âÂÂ25 mm for males and 17âÂÂ25 mm for females. Adults are on wing year-round in warmer areas, but usually from August to May. At higher altitudes adults are on wing in December and January.
The larvae feed on the buds and green seeds of Geranium and Pelargonium species.