Genus Vanessa is a group of butterflies belonging to the family Nymphalidae. The butterflies in this genus are also commonly known as the "vanessids" or "brush-footed butterflies". Some species within this genus include the Red Admiral, Painted Lady, and the American Lady. While these three species may have different common names, they all share similar physical characteristics and belong to the same genus. The term "vanessids" is often used to refer to all members of this genus as a collective term. Additionally, the term "emperor butterflies" is sometimes used to refer to the members of this genus due to their large size and majestic appearance.