American painted lady American painted lady The American painted lady or American lady ("Vanessa virginiensis") is a butterfly found throughout North America. The larvae feed on various Asteraceae, such as the cudweeds (genus "Gnaphalium"), the pussytoes ("Antennaria"), and the everlastings ("Anaphalis"), which all belong to tribe Gnaphalieae. All stages of the life cycle can be found throughout temperate North America as well as Madeira and the Canary Islands. Occasionally individuals can be found as far as southwest Europe. "Vanessa virginiensis" is most easily distinguishable by its two large eyespots on the ventral side, whereas "V. cardui" has four small eyespots and "V. annabella"
Australian painted lady to lowered temperatures. This demonstrates the phenotypic plasticity, or the tendency for visible traits to vary with changing environmental conditions, of the painted lady butterflies. It also suggests that the painted lady is the ancestral form, and environmental stress slowly drove speciation by adaptation into the Australian painted lady. In other words, the Australian painted lady most likely evolved from the painted lady due to the environmental conditions in Australia. The Australian painted lady's distribution is restricted to Australia. The closely related "V. cardui" is found throughout the rest of the world, so the two species have an allopatric distribution.