Painted Lady

The painted lady is a member of the brushfoot family (Nymphalidae) and is often called the most widespread butterfly species in the world, found on every continent except Antarctica and South America (where a closely related sister species occurs instead). Its extraordinary range comes from powerful, sustained migratory flights that can carry successive generations thousands of kilometers, including well-documented multi-generational migrations across the Sahara Desert between Europe and sub-Saharan Africa.

It belongs to the same genus as the red admiral, and the two share a similar wing shape and general behavior, though the painted lady's overall coloring is a warmer orange-brown mosaic rather than the red admiral's bold red band. The species is a generalist, both in habitat and in diet, which helps explain why it can colonize such a wide variety of open, sunny environments around the globe.

Painted ladies are also a favorite subject for butterfly-rearing kits and school science programs because their caterpillars readily feed on a wide range of common plants and complete their life cycle quickly, making the species one of the most familiar butterflies to encounter both in the wild and in classrooms.

• Wingspan roughly 5–9 cm; upperwings are orange to salmon-brown with a mosaic of black blotches and bars, and black wingtips marked with a scatter of white spots.
• Underside of the hindwing is intricately patterned in gray, brown, and cream with a row of small blue-centered eyespots near the margin.
• Wings are somewhat angular with a slightly scalloped outer edge.
• Body is stout and hairy, typical of brushfoot butterflies, with clubbed antennae.
• Lookalikes: the American lady has fewer, larger eyespots on the hindwing underside (two large ones instead of a row of small ones) and a white spot on a pink field near the forewing tip; the red admiral shows a bold orange-red diagonal band rather than a mosaic pattern.

Found nearly worldwide in open, sunny habitats such as fields, meadows, gardens, roadsides, and disturbed ground, avoiding dense unbroken forest. It is a strong migrant, with populations moving seasonally between warmer breeding grounds and cooler regions, and in some years undergoing spectacular mass migrations visible to observers. Adults are active from spring through fall in temperate zones and year-round in warmer climates, basking frequently with wings spread to absorb sunlight.

Adults are fast, erratic fliers that visit a broad range of flowering plants for nectar, including thistles, asters, and many garden flowers, making them important generalist pollinators. Caterpillars are similarly unfussy feeders, consuming a wide variety of host plants including thistles, mallows, legumes, and many other herbaceous plants, often building loose silk shelters among leaves. The species is famous for long-distance, multi-generational migration, with individuals capable of sustained flights covering vast distances, a behavior that lets the species recolonize temperate regions each year after being killed back by winter cold.

Complete metamorphosis with multiple generations per year in warm climates. Females lay single small green eggs on host plant leaves; caterpillars are dark, spiny, and mottled, feeding within a silk-webbed leaf shelter through several molts. Pupation occurs in a hanging chrysalis attached to a stem or leaf, and adults emerge after one to two weeks depending on temperature. In cold-winter regions the species generally cannot overwinter in any stage and instead recolonizes annually through migration from warmer areas.