Characterized by a large and robust body, this insect exhibits significant sexual dimorphism, with females measuring between 55 and 65 millimeters in length, while males are smaller, ranging from 35 to 45 millimeters. The species is a classic example of aposematism; adults possess a deep bluish-black or dark green body contrasted by brilliant yellow or orange bands and spots on the pronotum and legs. The forewings, or tegmina, are olive green with yellow veins, while the hindwings are a vibrant red or pink with dark margins, which are conspicuously displayed during flight. The nymphs of Chromacris speciosa are striking, featuring a shiny jet-black body with bright red or orange accents on their heads and legs, clustering together to amplify their warning signal through collective visual impact.

Geographical distribution: Distributed widely across the tropical and subtropical regions of South America. It is commonly found in countries such as Brazil (particularly within the Atlantic Forest and Cerrado biomes), Paraguay, Bolivia, and northern Argentina (including provinces like Misiones, Corrientes, and Chaco). Its geographical range also extends northward into forested and transition areas of Colombia and Venezuela.

Habitat: Primarily inhabits humid tropical forests, forest edges, shrubby savannas, transition zones, and disturbed habitats with dense secondary vegetation. It prefers mid-level vegetation strata, including tall herbaceous plants and shrubs, where high humidity levels are maintained and sunny clearings are available, which are essential for its daily thermoregulation activities.

Feeding: This insect is a polyphagous herbivore with a specialized preference for host plants within the Solanaceae family, particularly species of the genera Solanum and Cestrum. By consuming these plants, which are rich in toxic alkaloids, the grasshopper successfully sequesters these chemical compounds within its tissues, rendering itself unpalatable and toxic to potential predators like birds, small mammals, and reptiles, thus reinforcing the effectiveness of its warning coloration.

Behavior: Renowned for the highly gregarious behavior of its nymphal stages. Nymphs form massive, coordinated clusters on host plants, a defensive and social strategy that enhances the visual impact of their warning coloration. Adults are primarily diurnal and lead a more solitary, less active lifestyle. Due to their chemical defenses, they are relatively slow-moving. Although adults possess fully developed wings, their flight is clumsy, heavy, and short-lived, used mainly for escaping immediate threats or seeking mates during the breeding season.

Reproduction: Begins with a mating ritual where males locate females using visual cues and substrate-borne vibrations on the vegetation. Following copulation, the female uses her specialized ovipositor to deposit eggs deep into moist, loose soil. The eggs are encased in a protective, foamy structure known as an ootheca, which hardens upon contact with air to shield the clutch from dehydration and soil-dwelling predators. Embryonic development often involves a period of diapause during the dry season, ensuring that the emergence of the highly gregarious nymphs coincides with the rainy season when fresh foliage is abundant.

Conservation status: Currently classified as Not Evaluated (NE) by the International Union for Conservation of Nature (IUCN). Owing to its extensive geographic distribution across the Neotropics, its adaptability to secondary and human-modified habitats, and the abundance of its primary host plants, the population remains stable and is not considered to be under any immediate threat of extinction.