The Riodinidae are members of the Superfamily Papilionoidea, the true butterflies. They typically thrive in the tropical latitudes, especially those of the Americas, and approximately 1,300 species are known. Small to medium in size, metalmarks vary widely in their patterns, behavior, and postures. Males have reduced front legs that are not used for walking, and females have three pairs of walking legs. Adults usually perch with their wings spread open or cocked slightly, while many tropical species habitually perch upside down on large leaves. Males locate mates by perching, rather than patrolling. Egg shape varies widely, but caterpillars are typically slug-shaped. Metalmarks overwinter in the larval or pupal stage.