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RIODINIDAE

(Metalmarks)

Riodinidae is the family of metalmark butterflies. The common name "metalmarks" refers to the small metallic-looking spots commonly found on their wings.Like the lycaenids, the males of this family have reduced forelegs while the females have full-sized, fully functional forelegs. The foreleg of males is often reduced and has a uniquely shaped first segment (the coxa) which extends beyond its joint with the second segment, rather than meeting it flush. They have a unique venation on the hindwing: the costa of the hind wing is thickened out to the humeral angle and the humeral vein is short.

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