Anteros is a Neotropical genus of butterflies of the family Riodinidae. The species of this genus are immediately recognizable by the under surface in which small, brown or black-bordered spots with metallic centres stand on the light yellow ground. The upper surface is mostly black with a yellowish central spot. Morphologically, the species are distinguished by two characteristics:by the long cilia at the anal angle of the hindwing and by dense, brightly coloured flocks of hair at the legs. Most of the species are not common; they mostly rest on the under surface of leaves with their wings spread out, but sometimes they clap their wings together above the back.