Which butterfly is famous for mimicking the monarch’s warning colors and pattern?

The viceroy butterfly is famous for mimicking the monarch’s warning colors and pattern.

The viceroy is an orange-and-black North American butterfly in the genus Limenitis. Its wings show dark veins and a black band across the hindwing, creating a strong visual resemblance to the monarch. This resemblance is an example of mimicry, in which one species resembles another.

For many years, scientists described the relationship as Batesian mimicry: the harmless viceroy supposedly copied the distasteful monarch. Later research found that viceroy caterpillars can also accumulate defensive chemicals from willow, poplar, and cottonwood relatives. As a result, both butterflies may be unpleasant to predators, and the relationship is commonly discussed as Müllerian mimicry.

The viceroy is not a monarch subspecies. It belongs to the brush-footed butterfly family, Nymphalidae, while the monarch belongs to the milkweed butterfly subfamily Danainae. Their similar appearance is therefore a striking case of convergent defensive coloration.