Characterized by an oblong and convex body shape, this insect ranges from 6 to 8 millimeters in length. It displays a striking dorsal coloration, typically reflecting shades of metallic blue, shiny green, or violaceous purple with a highly polished sheen. The head is relatively short and features dark, filiform antennae composed of 11 segments. A deep, transverse basal groove runs across the pronotum, which is the defining anatomical feature that inspires its specific epithet. The elytra are densely covered with irregular punctures without structured striae, entirely covering the abdomen. The hind legs are equipped with significantly enlarged femora, specifically modified for jumping, which is a major diagnostic trait of its tribe.

Geographical distribution: This species is native to South America, with established populations widely documented in southern and southeastern Brazil (particularly in states like Paraná, Santa Catarina, and Rio Grande do Sul), northern and central Argentina, Paraguay, and Uruguay. Its geographic range is intrinsically linked to the distribution of its primary host plants, showing a continuous presence throughout the Atlantic Forest corridor and adjacent transitional biomes.

Habitat: It is primarily found in humid forest ecosystems, native forest edges, riparian zones, and regenerating secondary woodlands. It is highly abundant within the Paranaense forest and Atlantic Forest biomes, as well as in humid grasslands and anthropically altered areas where pioneer woody shrubs of the family Primulaceae thrive, especially those belonging to the genus Myrsine (commonly known as capororocas), which provide vital ecological support.

Feeding: Adults and larvae are strictly phytophagous, specializing in host plants of the family Primulaceae, with a marked preference for species such as Myrsine coriacea and Myrsine ferruginea. Adult beetles consume the leaf parenchyma from the upper surface, creating small circular holes and a distinct skeletonizing damage pattern. The larvae feed primarily on the lower surface of the leaves, scraping away the cellular layers, which can severely reduce the photosynthetic capacity of the host plant when population densities are exceptionally high.

Behavior: Displaying diurnal activity, this insect is most active during the warmest hours of the day, when individuals can be seen feeding, mating, or actively crawling on foliage. When confronted with predators or physical disturbances, it employs a highly efficient escape strategy consisting of powerful jumps powered by its enlarged hind femora, often followed by a swift and directed flight. During peak emergence periods, adults frequently form large aggregations on a single host plant, a cooperative behavior that significantly maximizes mating success rates.

Reproduction: The reproductive cycle begins with courtship and mating on the host plant foliage during the spring and summer months. Following fertilization, the female deposits small clusters of bright yellow or orange eggs on the underside of mature leaves, securing them with a sticky secretion. After an incubation period of roughly one week, dark, caterpillar-like larvae hatch and progress through three distinct instars of active feeding. Once fully developed, the larvae drop to the forest floor to pupate within the leaf litter or a few centimeters deep in the moist soil, eventually emerging as adults.

Conservation status: This taxon is currently not assessed by the International Union for Conservation of Nature (IUCN) and is therefore categorized as Not Evaluated (NE). Globally and regionally, it is a common and abundant insect that does not face immediate extinction threats, largely due to the abundance of its host plants and its resilience to habitat fragmentation. Nevertheless, large-scale deforestation in South American forests and the chemical runoff from adjacent agricultural zones pose localized threats to its populations.