Exhibits a delicate and streamlined structure typical of medium-sized pierid butterflies, with a wingspan that generally ranges between 40 and 50 millimeters. The dorsal surface of the wings is characterized by a bright white ground color, which contrasts sharply with a series of distinct black spots and dark markings concentrated near the apex of the forewings, forming a classic checkered pattern. On the ventral side of the hindwings, it features an intricate network of greenish, grayish, and yellow lines that trace the wing veins over a pale yellow background, providing exceptional camouflage when resting with closed wings among dry vegetation or foliage. Sexual dimorphism is prominent in this species, as females tend to display darker coloration and more extensive dark patterns compared to their male counterparts, along with slightly more rounded wing shapes.

Geographical distribution: Is widely distributed throughout the Southern Cone of South America, covering a vast territorial range. Its presence is well documented across most of Argentina, from the northern provinces to the cold steppes of Patagonia, as well as throughout Uruguay, southern Brazil (particularly in the states of Rio Grande do Sul and Santa Catarina), central and southern Paraguay, and various regions of Chile, where it inhabits both transverse valleys and Andean slopes at low to moderate elevations.

Habitat: Inhabits a wide variety of open and semi-open ecosystems, demonstrating remarkable ecological plasticity. It is commonly observed in temperate grasslands, shrubby steppes, native meadows, forest edges, and high-altitude Andean wetlands. Furthermore, it has adapted successfully to human-modified environments, being a highly frequent visitor to agricultural fields, alfalfa crops, home gardens, urban parks, roadsides, and vacant lots where its host plants grow, tolerating altitudinal ranges from sea level to over 2500 meters in elevation.

Feeding: Displays a distinct feeding behavior depending on its developmental stage. As an adult or imago, it is an exclusively nectarivorous organism that visits a wide variety of wild and ornamental flowers, showing a preference for species of the Asteraceae, Fabaceae, and Verbenaceae families to obtain the carbohydrates necessary to sustain its flight. Conversely, during its larval stage, it is a specialized herbivore that actively feeds on the leaves of plants from the Brassicaceae family (such as wild mustard, wild radish, and cabbage) and the Tropaeolaceae family (especially nasturtium, Tropaeolum majus), occasionally becoming a minor pest in horticultural crops.

Behavior: Is a strictly diurnal insect with a fast, erratic flight pattern that is typically close to the ground, allowing it to effectively evade potential aerial predators. Adult males are highly active during peak hours of sunlight, displaying territorial behaviors such as constant patrolling or hilltopping (seeking mates on hill summits or elevated terrains) to locate receptive females. They are frequently seen congregating on wet soil or mud puddles in a behavior known as mud-puddling, through which they absorb essential mineral salts and sodium required for reproductive success.

Reproduction: Its life cycle involves complete metamorphosis, or holometabolous development, which takes place over several weeks depending on environmental temperatures. Following courtship and mating, the female individually deposits her pale yellow fusiform eggs, which turn bright orange prior to hatching, placing them strategically on the underside of the leaves of the selected host plants. Upon hatching, the caterpillars are greenish and, as they mature, develop a pattern of longitudinal yellow stripes and tiny black dots that provide perfect cryptic camouflage within their plant environment. Once fully grown, the larva seeks a rigid support such as branches, stems, or walls to transform into a girdled chrysalis, green or grayish in color, secured by a silken belt until the emergence of the new adult.

Conservation status: Is not currently listed under any threat category on the IUCN Red List due to its extreme abundance, high ecological resilience to human disturbance, and because its populations remain highly stable throughout its range of distribution, thus being considered a species of Least Concern.