Description: It is a large and robust butterfly, known for its strong flight and imposing appearance. Adults have broad wings with dark brown to chestnut coloration, showing subtle patterns that provide camouflage while resting. Sexual dimorphism is slight, with females usually larger. The caterpillars are large, gregarious, and dark-colored, bearing urticating spines that serve as an effective defense mechanism.

Geographic distribution: It is widely distributed throughout tropical and subtropical America, from Mexico and Central America to northern and central South America, including much of Brazil, Paraguay, and northern Argentina. Its range closely follows the distribution of its host plants.

Habitat: It inhabits forests, open woodlands, suburban areas, gardens, and plantations, particularly where native or ornamental palms are present. The species adapts well to human-modified environments.

Diet: Adults feed mainly on fermented fruit juices, sap, and sugary liquids, and are less frequently observed visiting flowers. Larvae feed on palm leaves, especially species of Syagrus, Cocos, and Acrocomia, sometimes causing significant defoliation during population outbreaks.

Behavior: It shows crepuscular and nocturnal activity, with adults flying mainly at dusk and during the night. Caterpillars are highly gregarious, moving and feeding in groups, which enhances both defense and feeding efficiency.

Reproduction: Reproduction is oviparous; females lay large clusters of eggs on palm leaves. After hatching, larvae develop collectively and eventually pupate in well-protected cocoons among dry leaves or near the base of the host plant.

Conservation status: It is not considered threatened and is generally classified as Least Concern, due to its broad distribution and adaptability. In some regions, it is regarded as an occasional pest of cultivated and ornamental palms.

Author of this compilation: EcoRegistros – 15/12/2025