This is a medium to large moth species characterized by a wingspan of approximately 40 to 52 mm. It features a predominantly pale yellow, cream, or whitish-beige coloration, adorned with delicate greyish-brown transverse lines that cross both the forewings and hindwings. The apex of the forewing is distinctly falcate or pointed, providing a sleek, aerodynamic silhouette when resting. Sexual dimorphism is highly pronounced in their sensory organs; males possess prominent bipectinate antennae designed to detect female pheromones from great distances, whereas females have simple filiform antennae and a significantly stouter abdomen. The caterpillars of this species exhibit remarkable camouflage, with elongated bodies in shades of grey or brown that perfectly mimic the small twigs of their host plants.

Geographical distribution: It is primarily distributed throughout the Southern Cone of South America. Its presence is highly concentrated in Chile, ranging from the Coquimbo region down to the La Araucanía region, with the highest densities recorded in the central valley and precordillera foothills. Additionally, documented populations are found in adjacent forested sectors along the western slope of Argentina, where the species has successfully adapted to temperate climatic conditions.

Habitat: This moth typically inhabits the sclerophyllous forest and the shrubland ecosystems known as the thorny matorral. It is highly adapted to Mediterranean-type climates, characterized by dry, hot summers and rainy winters. It is commonly observed on hillside slopes, peri-urban agricultural lands, and gardens containing the native tree known as espino (Acacia caven), which serves as an indispensable vegetative host for its larval stages.

Feeding: During its larval stage, this species is strictly phytophagous and monophagous, feeding almost exclusively on the leaves and tender buds of the espino (Acacia caven). Its chewing mouthparts are specially adapted to process this tough, thorny foliage. In contrast, adult moths possess a reduced proboscis and do not feed extensively; their nutrition in this final stage is limited to occasionally sipping nectar from nocturnal flowers or sugary plant sap to sustain the energy levels required for flight and mating.

Behavior: It is a primarily nocturnal and crepuscular species. During daylight hours, adults remain motionless on tree trunks or beneath leaves, relying on their cryptic coloration to blend in and avoid detection by predators such as birds and larger insects. At dusk, they initiate flight and are strongly attracted to artificial light sources, making them a common sight around suburban homes. The larvae employ a passive defense strategy known as thanatosis combined with mimicry, holding their bodies rigid at an angle to look exactly like a thorn or dry twig when threatened.

Reproduction: The reproductive cycle begins when the female releases sex pheromones during the night to attract males. Following copulation, the female deposits her eggs, which are initially pale green and turn darker before hatching, either individually or in small clusters on the twigs and leaves of the espino (Acacia caven). The embryonic development lasts for a couple of weeks, after which the caterpillars hatch and undergo several larval stages before reaching maturity. Upon completing larval development, they descend to the ground or seek crevices in the bark to enter the pupa or chrysalis stage, weaving a loose silk cocoon mixed with soil debris to undergo metamorphosis.

Conservation status: It is currently not formally evaluated under the IUCN Red List criteria. Nevertheless, its populations are considered stable within protected wild areas. Its primary threat is the loss, fragmentation, and frequent forest fires affecting the sclerophyllous forest of central Chile, along with the clearing of espino matorrals for agricultural expansion or charcoal production, which drastically reduces its essential breeding and feeding grounds.