The Life of Animals | Riodinidae | The Riodinidae (or metalmarks) are a family of butterflies. There are approximately 1,000 species of metalmark butterflies in the world. Although mostly neotropical in distribution, the family is represented both in the New World and the Old World
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Like the lycaenids, the males of this family have reduced forelegs while the females have full-sized, fully functional forelegs. The costa of the hind wing is thickened out to the humeral angle and the humeral vein is short
Earlier, they were considered to be part of the now defunct family Erycinidae, whose species are divided between this family and the subfamily Libytheinae.